"Alice Cooper: "Look at Madonna; she did all the outrageous stuff, but she could sing. She was a great performer! If she got up there and she couldn't sing a lick, I'd go, 'Ok, this is a sideshow.' But, she can really sing.""

"Jon Bon Jovi: "Madonna has been incredibly important to the 1980s, musically... a little disco queen who... became an icon." (1990)."

"Britney Spears:"

"Melanie Brown: "It's easy for critics to knock celebrities who choose to adopt, but it's a good thing that Madonna's doing. Not only is she highlighting the plight of orphans in Africa, she's also giving this little girl the chance of a better life." ."

"Bono: "Madonna should be applauded for helping to take a child out of the worst poverty imaginable and giving him a better chance in life. Baby David is lucky to have been adopted by someone who can give him a chance of survival in this world and I don't think it's fair that people are criticizing her.""

"Ricky Martin: "I know Madonna as a mother, and she’s exemplary, the love she gives her kids is a dream, and I know that her heart is big enough to adopt not just one child but to adopt 20." ."

"Sean Combs: "I'd like to do something with Madonna in Malawi. I see what she does and I think it's fantastic. I'd like to help in any way I can.""

"Beyoncé: "I love Madonna. I do! Definitely. It all works for Madonna. I mean, I couldn’t do a lot of the things she does, but it works for her. I watched the "Human Nature" music video for the "Check On It" video even though it didn't come out anything like it. I wanted to do something like that but we didn't have time to do it because it was just a 12-hour shoot.""

"Ayumi Hamasaki: "I really like Madonna. What I admire is she's made it on her own terms." ."

"Donna Summer: "I was sitting around thinking I should do something. I was thinking about design school. A friend said, 'Are you out of your mind? Do an album.' But I like privacy and I like my space. I like being with my family. You have to be in the right frame of mind. You can't be like 'Don't touch me.' to your fans or saying 'I don't want to sign autographs.' I think I was exhausted for a lot of years. I have to take my hat off to people like Madonna. They keep doing it." ."

"DJ Gordon Edge: "She is very natural. I did not get to know her as a person but she is down-to-earth and straightforward. She just speaks her mind.""

"Daddy G.: "Working with Madonna is something to tell to your grandsons.""

"Lenny Kravitz: "She's a genius, she can do no wrong." VH1 Behind The Music."

"Shakira: "I admire Madonna because she always did whatever she felt like doing. She went through some controversial periods when people rejected her, but she kept on reinventing herself." ."

"Seymour Stein: "I was in the hospital, I had her come see me in the hospital, we talked a deal in the hospital and we did the deal in the hospital. Within days, even before I got out of the hospital, she was starting to record what became her first single, Everybody, and we were off and running. I saw her staunch determination and I knew she would work as hard as I did and much harder, in fact. And that's what you need in an artist. She worked harder than anybody. I just saw her perform in Berlin, and she still works harder than anybody." ."

"DJ Enferno: "She has so much knowledge– she’s been in the business for so long, she’s got so many good ideas, and she’s really witty, that was one surprising thing that I found out about her. She’s really sharp and she’ll kind of bust your chops a little bit.""

"Mirwais: "Once I collaborated with the Queen Bee, whoever came after her seemed a little boring to me! Many came to ask me to produce tracks, from Depeche Mode to Jennifer Lopez, but I said no to all of them!""

"Cyndi Lauper:"

"Sinéad O'Connor: "I love her, I adore her and I respect her. I pity her for all the analysis she has to put up with.""

"Marilyn Manson: "I watched a screening of her [Madonna's] film and I was sitting right next to her, which to me was exciting still. I’m not jaded enough to not be excited by that.""

"Tupac Shakur: "I was letting people dictate who should be my friends. I felt like because I was this big Black Panther type of nigga, I couldn't be friends with Madonna. And so I dissed her, even though she showed me nothing but love. I felt bad, because when I went to jail, I called her and she was the only person that was willing to help me.""

"Mary J. Blige: "I don't think the music business, as far as females, would be anything without Madonna.""

"Sting: "She's outrageous, she's provocative, she's inscrutable. And over the years, we've all been witnessed to her evolution, from street smart kid sister to virgin bride, from sex goddess to a yogi. Her mind is as celebrated as her body, she's as feared as she's desired, she leads while others follow... A woman who is all woman, and all women." ."

"William Orbit: "You know, she hasn't shouted about her musical abilities, but she is the consummate songwriter. She listens to classic musicals a lot. Not just the obvious ones, like Singin' in the Rain, but the lesser ones. I remember one time we all had dinner in Germany, and somebody brought up old musicals, and she was the one who knew all the verses. And she writes really solid, melodic stuff like that.""

"Sean Penn:"

"Joe Henry: "I've known her since I was 15 and she was 17, longer than I've known my wife. We have had a great relationship, and part of that was because I never needed anything from her. I recognised that we were in two different occupations. Not to disparage one ounce of her musicality, I was always of the belief that her persona was her career. Whether she was making a movie or writing a song or punching a photographer, it was all pushing a persona forward, and that was the real body of work. I was never tempted to slip a song to her at thanksgiving.""

"Guy Ritchie:"

"Christopher Ciccone:"

"I think I have a dick in my brain. I don't need to have one between my legs."

"A lot of people are afraid to say what they want. That's why they don't get what they want."

"My pussy has nine lives."

"Then there are guys who say 'I have never fantasized about being with a man.' They are lying. And the least offensive men I've been with in terms of their sexual politics and how they view me as a woman, have been men who have either slept with men, or at least kissed or held a man once. It opens up your thinking. You don't think that women are less-than you are."

"Straight men need to be emasculated. I'm sorry. They all need to be slapped around. Women have been kept down for too long. Every straight guy should have a man's tongue in his mouth at least once."

"Madonna: "I am a sick fuck I have my nose in everybody's sex life!""

"Letterman: "Oh, stop it! Will you stop? Ladies and gentlemen, turn down your volume. Turn down the volume immediately! She can't be stopped! There's something wrong with her!""

"Letterman: "I want to thank you folks for coming out for this run-through show. Thank you very much. This, of course, will never see the light of day. You won't miss a thing tonight.""

"Madonna: "Listen, all you do is talk about my sex life on your show, so now you don't want to talk about my sex life when I'm on your show?!""

"Letterman: (after the singer brands him a "sick fuck") "You realize this is being broadcast don't you?""

"Madonna: "Is that a rug?" (referring to David Letterman's hair)."

"When I'm hungry, I eat. When I'm thirsty, I drink. And when I feel like saying something, I just say it."

"Once again I am caught in the glare of ageism and misogyny that permeates the world we live in. A world that refuses to celebrate women past the age of 45 and feels the need to punish her if she continues to be strong-willed, hard-working and adventurous. […] I have been degraded by the media since the beginning of my career but I understand that this is all a test and I am happy to do the trailblazing so that all the women behind me can have an easier time in the years to come."

"Absolutely no regrets."

"Beauty is where you find it."

"Life's too short to be bitter, I'm too short to be bitter."

"Italians do it Better"

"I'm everything!"

"I stand for freedom of expression, doing what you believe in, and going after your dreams."

"One set of circumstances does not complete you. Maybe nothing ever does. So you work on your life and you work on your 'work' and you try to live every single day like it's your last. And you try to be better, to yourself and to others. I don't always succeed. But I try and it's my goal."

"I'd like to think I am taking people on a journey; I am not just entertaining people, but giving them something to think about when they leave."

"One must dare to show what he wants. You have to go and ask for things rather than wait for them to happen."