"Leisure and curiosity might soon make great advances in useful knowledge, were they not diverted by minute emulation and laborious trifles"

"Knowledge of what is possible is the beginning of happiness"

"Great effort from great motives is the best definition of a happy life"

"The seat of knowledge is in the head, of wisdom, in the heart"

"Seek the lofty by reading, hearing and seeing great work at some moment every day"

"We worked very hard to make the lyrics suit the music. I can't, like Elton John, for example, compose by lyrics. Elton has a great talent for that. Whatever you give him, including your questions, he composes in half an hour and makes a great song out of it"

"I said when I came into office that I don't want to be a great leader; I want to be a good democrat"

"It is a useless life that is not consecrated to a great ideal. It is like a stone wasted on the field without becoming a part of any edifice"

"I just had lunch with Slash two days ago. He loves Axl. He holds no grudges towards him. Twenty years of great music wasn't created because of some stupid grudge. That's a shame"

"The moment you think you understand a great work of art, it's dead for you"

"Never stop learning; knowledge doubles every fourteen months"