Bill Gates

"The climate is not the end of the planet. So the planet is going to be fine"

"The big concern is about the generations yet to come when [AI] gets way smarter than it is right now. And if a person with Mal intent was using that, say, for a cyberattack, or to make a deep fake that makes a politician look like they're doing something awful, or even one of your relatives saying, okay, I've been kidnapped."

"If you eventually get a society where you only have to work three days a week, that’s probably OK. If you free up human labor, you can help elder people better, have smaller class sizes – you know, the demand for labor to do good things is still there. And then if you ever get beyond that, you have a lot of leisure time and you’ll have to figure out what to do with it."

"So the idea of being able to explain something in a succinct form is such a cool thing, and it requires you to know a field so well."

"India is an example of a country where there's plenty of things that are difficult there -- the health, education, nutrition is improving and they are stable enough and generating their own government revenue enough that it's very likely that 20 years from now people will be dramatically better off and it's kind of a laboratory to try things that then when you prove them out in India, you can take to other places. And so our biggest non-US office for the Foundation is in India and the most number of pilot roll out things we're doing anywhere in the world are with partners in India. If you go there and you've never been you might think whoa this is a chaotic place and you know you're not used to so many levels of income all being on the street at the same time but you will get a sense of vibrancy."

"Within 10 years, AI will replace many doctors and teachers—humans won’t be needed ‘for most things’. It’s very profound and even a little bit scary — because it’s happening very quickly, and there is no upper bound,."

"The picture of the world's richest man killing the world's poorest children is not a pretty one."

"People will say a lot of things about me when I die, but I am determined that "he died rich" will not be one of them."

"One of the best things I read was an 1889 essay by Andrew Carnegie called The Gospel of Wealth. It makes the case that the wealthy have a responsibility to return their resources to society, a radical idea at the time that laid the groundwork for philanthropy as we know it today."

"The best way to prepare [to be a programmer] is to write programs, and to study great programs that other people have written. In my case, I went to the garbage cans at the Computer Science Center and fished out listings of their operating system."

"You've got to be willing to read other people's code, and then write your own, then have other people review your code. You've got to want to be in this incredible feedback loop where you get the world-class people to tell you what you're doing wrong..."

"The finest pieces of software are those where one individual has a complete sense of exactly how the program works. To have that, you have to really love the program and concentrate on keeping it simple, to an incredible degree."

"We're no longer in the days where everything is super well crafted. But at the heart of the programs that make it to the top, you'll find that the key internal code was done by a few people who really know what they were doing."

"Unfortunately, many programs are so big that there is no one individual who really knows all the pieces, and so the amount of code sharing you get isn't as great. Also, the opportunity to go back and really rewrite something isn't quite as great, because there's always a new set of features that you're adding on to the same program."

"The worst programs are the ones where the programmers doing the original work don't lay a solid foundation, and then they're not involved in the program in the future."

"Programs today get very fat; the enhancements tend to slow the programs down because people put in special checks. When they want to add some feature, they'll just stick in these checks without thinking how they might slow the thing down."

"Before Paul and I started the company, we had been involved in some large-scale software projects that were real disasters. They just kept pouring people in, and nobody knew how they were going to stabilize the project. We swore to ourselves that we would do better."

"Success is a lousy teacher. It seduces smart people into thinking they can't lose."

"The obvious mathematical breakthrough would be development of an easy way to factor large prime numbers."

"One of the wonderful things about the information highway is that virtual equity is far easier to achieve than real-world equity...We are all created equal in the virtual world and we can use this equality to help address some of the sociological problems that society has yet to solve in the physical world,""

"This leads to the paradox, that because the disease is only in the poor countries, there is not much investment. For example, there is more money put into baldness drugs, than are put into malaria. Now, baldness, it is a terrible thing [audience laughter] and rich men are afflicted, so that is why that priority is set."

"The harsh mathematics of polio makes it clear: We cannot maintain a level of one thousand or two thousand cases a year. Either we eradicate polio, or we return to the days of tens of thousands of cases per year. That is no alternative at all. We don't let children die because it is fatiguing to save them. Our commitment as a foundation is to work with partners until no children die from polio."

"The success of the Nigeria programme hinges on the active participation of everyone to make sure that all children are reached by National Immunization Days (NIDs), Immunization Plus Days (IPDs) and the routine immunization programme, if the country capitalizes on the commitments I've heard in the past two days, Nigeria can lead the way to a polio-free Africa."

"We are in the end game, I'm optimistic that we will be successful. I'm personally very committed."

"I'd like to start by telling you about my wife Melinda's Aunt Myra. We see her a few times a year. Aunt Myra worked for many years taking reservations for Delta Airlines. She lived in New Orleans until Hurricane Katrina, and then she moved to Dallas, Melinda's hometown. She loves to see our kids. When we all get together, she'll sit down on the floor and play games with them. Aunt Myra also has polio. She's in braces, and she has been ever since she was a little girl. Our children only know what polio is because of their aunt. Otherwise, the disease would just be another historical fact they learn about in school. In fact, even though I was born just three years after one of the worst polio epidemics in American history, I didn't know anyone with polio when I was growing up. That's how far we've come."

"In the last 20 years, thanks to your hard work, polio has declined by 99 percent. In 1988, 350,000 people got polio. By 2008, the number was down to just a couple of thousand."

"First we've got population. Now, the world today has 6.8 billion people. That's headed up to about nine billion. Now, if we do a really great job on new vaccines, health care, reproductive health services, we could lower that (forecast) by, perhaps, 10 or 15 percent, but there we see an increase of about 1.3 (per year)."

"Let's burn the 99%."

"He [Steve Jobs] showed me the boat he was working on ... and talked about how he's looking forward to being on it, even though we both knew there was a good chance that wouldn't happen."

"The moral systems of religion, I think, are superimportant. We've raised our kids in a religious way; they've gone to the Catholic church that Melinda goes to and I participate in. I've been very lucky, and therefore I owe it to try and reduce the inequity in the world. And that's kind of a religious belief. I mean, it's at least a moral belief."

"I agree with people like Richard Dawkins that mankind felt the need for creation myths. Before we really began to understand disease and the weather and things like that, we sought false explanations for them. Now science has filled in some of the realm – not all – that religion used to fill. But the mystery and the beauty of the world is overwhelmingly amazing, and there's no scientific explanation of how it came about. To say that it was generated by random numbers, that does seem, you know, sort of an uncharitable view. I think it makes sense to believe in God, but exactly what decision in your life you make differently because of it, I don't know."

"We would like every country to be self-sufficient so that both in terms of running a good primary health care system and funding a good primary health care system, it's all OK, and they just participate in regional bodies that have standby capacity to deal with these things. Africa, of all the places in the world, is the furthest behind on being able to do that. And through aid, health and health systems in Africa have improved very, very dramatically."

"...this has been a mismanaged situation every step of the way. It's shocking. It's unbelievable — the fact that we would be among the worst in the world."

"Personal computing today is a rich ecosystem encompassing massive PC-based data centers, notebook and Tablet PCs, handheld devices, and smart cell phones. It has expanded from the desktop and the data center to wherever people need it — at their desks, in a meeting, on the road or even in the air."

"Does the e-mail say it's about 'enlargement' — that might be spam."

"If you show people the problems and you show people the solutions they will be moved to act."

"If something is expensive to develop, and somebody's not going to get paid, it won't get developed. So you decide: Do you want software to be written, or not?"

"It's not manufacturers trying to rip anybody off or anything like that. There's nobody getting rich writing software that I know of."

"Instead of buying airplanes and playing around like some of our competitors, we've rolled almost everything back into the company."

"To create a new standard, it takes something that's not just a little bit different; it takes something that's really new and really captures people's imagination — and the Macintosh, of all the machines I've ever seen, is the only one that meets that standard."

"The next generation of interesting software will be done on the Macintosh, not the IBM PC."

"I believe OS/2 is destined to be the most important operating system, and possibly program, of all time."

"There's only one trick in software, and that is using a piece of software that's already been written."

"I have to say that in 1981, making those decisions, I felt like I was providing enough freedom for 10 years. That is, a move from 64 K to 640 K felt like something that would last a great deal of time. Well, it didn't - it took about only 6 years before people started to see that as a real problem."

"If people had understood how patents would be granted when most of today's ideas were invented, and had taken out patents, the industry would be at a complete standstill today.... The solution to this is patent exchanges with large companies and patenting as much as we can."

"I laid out memory so the bottom 640 K was general purpose RAM and the upper 384 I reserved for video and ROM, and things like that. That is why they talk about the 640 K limit. It is actually a limit, not of the software, in any way, shape, or form, it is the limit of the microprocessor. That thing generates addresses, 20-bits addresses, that only can address a megabyte of memory. And, therefore, all the applications are tied to that limit. It was ten times what we had before. But to my surprise, we ran out of that address base for applications within—oh five or six years people were complaining."

"Gary Kildall was one of the original pioneers of the PC revolution. He was a very creative computer scientist who did excellent work. Although we were competitors, I always had tremendous respect for his contributions to the PC industry. His untimely death was very unfortunate and he and his work will be missed."

"There are no significant bugs in our released software that any significant number of users want fixed. ... I'm saying we don't do a new version to fix bugs. We don't. Not enough people would buy it. You can take a hundred people using Microsoft Word. Call them up and say "Would you buy a new version because of bugs?" You won't get a single person to say they'd buy a new version because of bugs. We'd never be able to sell a release on that basis."

"In terms of doing things I take a fairly scientific approach to why things happen and how they happen. I don't know if there's a god or not, but I think religious principles are quite valid."

"What we're saying to people is that every idea about ease-of-use, we can develop in software, for the PC, without asking them to buy new hardware, without asking them to throw away their old applications."