"The ability to deal with people is as purchasable a commodity as sugar or coffee, and I will pay more for that ability than for any other under the sun."

"I believe the power to make money is a gift of God … to be developed and used to the best of our ability for the good of mankind. Having been endowed with the gift I possess, I believe it is my duty to make money and still more money and to use the money I make for the good of my fellow man according to the dictates of my conscience."

"I believe it is a religious duty to get all the money you can, fairly and honestly; to keep all you can, and to give away all you can."

"I was early taught to work as well as play, My life has been one long, happy holiday; Full of work and full of play — I dropped the worry on the way — And God was good to me every day."

"The most important thing for a young man is to establish a credit — a reputation, character."

"God gave me my money."

"Do you know the only thing that gives me pleasure? It's to see my dividends coming in."

"I know of nothing more despicable and pathetic than a man who devotes all the hours of the waking day to the making of money for money's sake."

"It is wrong to assume that men of immense wealth are always happy."

"I do not think that there is any other quality so essential to success of any kind as the quality of perseverance. It overcomes almost everything, even nature."

"“We must ever remember we are refining oil for the poor man and he must have it cheap and good.”"

"The impression was gaining ground with me that it was a good thing to let the money be my slave and not make myself a slave to money."

"The Wright brothers flew right through the smoke screen of impossibility."

"We find that in research a certain amount of intelligent ignorance is essential to progress; for, if you know too much, you won't try the thing."

"We think we are smart because we have been flying for about sixty years. Birds and bees and butterflies have been flying for hundreds of thousands of years."

"There are two kinds of courage. One is a spontaneous explosion of aroused instincts to meet some sudden emergency; the other is steadfast and enduring against repeated failures and rebuffs. It's what boxers call 'the fighting heart,' the will to come bouncing back every time one is knocked down. All pioneers need that kind of courage, and our youngsters will need plenty of it when they plunge into the world of tomorrow.""

"Why is the human skull as dense as it is? Nowadays we can send a message around the world in one-seventh of a second, but it takes years to drive an idea through a quarter-inch of human skull."

"You are always too late with a development if you are so slow that people demand it before you yourself recognize it. The research department should have foreseen what was necessary and had it ready to a point where people never knew they wanted it until it was made available to them."

"Logic is a way of going wrong systematically."

"The key to economic prosperity is the organized creation of dissatisfaction."

"A problem thoroughly understood is always fairly simple. Found your opinions on facts, not prejudices. We know too many things that are not true."

"The whole fun of living is trying to make something better."

"You know, you read about the future. You can't help that. I don't look upon the future. I am not a politician. I am not worried about the future at all. I don't like to run it down. I don't like to think of it being too dark because I expect to spend all the rest of my life there and I don't want to have a nasty end to it."

"Floyd Mayweather is one of the few great fighters left who has it both offensively and defensively."

"Oh Floyd Mayweather, Jr. My god! Ability like nobody’s business."

"Mayweather is as close to Sugar Ray Robinson as this generation will see. He doesn't have the single-punch KO power of Robinson, but he's just as sweet."

"Of all the fighters today, I have to say that Mayweather reminds me most of me," Leonard told Irish boxing writer Brian Doogan in describing the incident. "The kid has every gift and physical attribute, but if he continues to be the kind of person he is, he'll never be one of us. He'll never make it."

"I'm always thinking, how can I get better?"

"Me? I'm loyal and honest, and I'm a good person. I call a spade a spade. Money doesn't make me; I make money. Without money, I'd be the same person."

"Why not? Everything you've got to own costs money. Everything you do costs money. You can't take your wife on a date for free."

"I'm a chess player; I play chess."

"I'm older and wiser. Just like fine wine, I get better with time."

"Anything can happen in the sport of boxing."

"People only see the money and cars, and they never saw the hard work or days I was pissing blood because I got hurt training."

"He can have heart, he can hit harder and he can be stronger, but there's no fighter smarter than me."

"Does he really want to step into the ring with best fighter of this era and embarrass himself? Being the coward that he is, I doubt he'll get in the ring. We'll see what his excuse will be this time... When I retire, I'll get Ricky Hatton to wash my clothes and cut my lawn and buckle my shoes."

"Greenspan kept an eye on such fluctuations as the sale of vacuum cleaners in Cleveland to, as they say, " get a precise idea about where the economy is going," and of course he micromanaged us into chaos."

"In my view, Alan Greenspan will go down in history as one of the worst chairmen of the Federal Reserve. Future textbooks will refer to Greenspan as an example of how not to run a central bank. In order to underline the bipartisan support that Wall Street has in Congress, during his time of leadership at the Fed he was hailed not only by Republicans but also by most Democrats as "the Maestro." This, despite his extremely conservative views, which called for, among other reactionary policies, the elimination of the minimum wage. In 2000, at a House Financial Services Committee hearing on bank mergers, I asked Greenspan, "Aren't you concerned that with such a growing concentration of wealth, if one of these huge institutions fails it will have a horrendous impact on the national and global economy?" Greenspan replied, "No, I'm not. I believe that the general growth in large institutions has occurred in the context of an underlying structure of markets in which many of the larger risks are dramatically-I should say, fully-hedged." Greenspan could not have been more wrong. Yet after leaving the Fed, he was hired to advise some of the biggest banks and wealthiest hedge fund managers in the world."