“I realise that in this undertaking I place myself in a certain opposition to views widely held concerning the mathematical infinite and to opinions frequently defended on the nature of numbers.”

“In mathematics the art of proposing a question must be held of higher value than solving it.”

“My beautiful proof lies all in ruins.”

“In re mathematica ars proponendi quaestionem pluris facienda est quam solvendi.”

“I realize that in this undertaking I place myself in a certain opposition to views widely held concerning the mathematical infinite and to opinions frequently defended on the nature of numbers.”

“Had Mittag-Leffler had his way, I should have to wait until the year 1984, which to me seemed too great a demand!”

“I should attempt to treat human vice and folly geometrically... the passions of hatred, anger, envy, and so on, considered in themselves, follow from the necessity and efficacy of nature... I shall...”

“If you can't test it, it's not theorics -- it's metatheorics. A branch of philosophy. So, if you want to think of it this way, our test equipment is what defines the boundary separating theorics fr...”

“Physicists have come to realize that mathematics, when used with sufficient care, is a proven pathway to truth.”

“Is it possible, in the final analysis, for one human being to achieve perfect understanding of another?We can invest enormous time and energy in serious efforts to know another person, but in the e...”

“What is the essence of Vitrag? Fearlessness!”

“Feel your emotions,Live true your passions,Keep still your mind.”

“Above all, don't lie to yourself. The man who lies to himself and listens to his own lie comes to a point that he cannot distinguish the truth within him, or around him, and so loses all respect fo...”

“Of all the bright cruel lies they tell you, the cruelest is the one called love.”

“Don't cry, I'm sorry to have deceived you so much, but that's how life is.”