I imagine, joking apart, that to know love, one must make mistakes and then correct them.

There is no significant idea which cannot be explained to an intelligent twelve year old boy in fifteen minutes.

If there existed no external means for dimming their consciences, one-half of the men would at once shoot themselves, because to live contrary to one's reason is a most intolerable state, and all men of our time are in such a state.

If it were not so frightening it would be amusing to observe the pride and complacency with which we, like children, take apart the watch, pull out the spring and make a toy of it, and are then surprised when the watch stops working.

Like all mad men, I thought everyone was mad except myself.

The key to success in life is using the good thoughts of wise people.

When Levin thought what he was and what he was living for, he could find no answer to the questions and was reduced to despair; but when he left off questioning himself about it, it seemed as though he knew both what he was and what he was living for, acting and living resolutely and without hesitation.