"Experience without theory is blind, but theory..." - Quote by Immanuel Kant

“Every man is to be respected as an absolute end in himself; and it is a crime against the dignity that belongs to him as a human being, to use him as a mere means for some external purpose.”

“All our knowledge falls with the bounds of experience.”

“Prudence reproaches; conscience accuses.”

“A new truth is a truth, an old error is an error.”

“If you would learn to write, it is in the street you must learn it. Both for the vehicle and for the aims of fine arts, you must frequent the public square. The people, and not the college, is the writer's home. A scholar is a candle which the love and desire of all men will light.”

“The study of geometry is a petty and idle exercise of the mind, if it is applied to no larger system than the starry one. Mathematics should be mixed not only with physics but with ethics; that is mixed mathematics.”

“Gray are all the theories, But green is the tree of life.”

“When art critics get together they talk about Form and Structure and Meaning. When artists get together they talk about where you can buy cheap turpentine.”

“If the facts don't fit the theory, change the facts.”