We cannot assert with Kant that the propositions of Euclidean geometry — Immanuel Kant

"Out of the crooked timber of humanity, no straight thing was ever made."

"Nature does nothing in vain, and in the use of means to her goals she is not prodigal. Her giving to man reason and the freedom of the will which depends upon it is clear indication of her purpose. Man accordingly was not to be guided by instinct, not nurtured and instructed with ready-made knowledge; rather, he should bring forth everything out of his own resources."

"The means employed by Nature to bring about the development of all the capacities of men is their antagonism in society, so far as this is, in the end, the cause of a lawful order among men."

"Mans greatest concern is to know how he shall properly fill his place in the universe and correctly understand what he must be in order to be a man."

"Immanuel Kant was the first hippie in history."

"Religion is too important a matter to its devotees to be a subject of ridicule. If they indulge in absurdities, they are to be pitied rather than ridiculed."