Do not laugh much or often or unrestrainedly.

If someone speaks badly of you, do not defend yourself against the accusations, but reply; "you obviously don't know about my other vices, otherwise you would have mentioned these as well

Unremarkable lives are marked by the fear of not looking capable when trying something new.

Two principles we should always have ready — that there is nothing good or evil save in the will; and that we are not to lead events, but to follow them.

These reasonings are unconnected: "I am richer than you, therefore I am better"; "I am more eloquent than you, therefore I am better." The connection is rather this: "I am richer than you, therefore my property is greater than yours;" "I am more eloquent than you, therefore my style is better than yours." But you, after all, are neither property nor style.

Each man's life is a kind of campaign, and a long and complicated one at that. You have to maintain the character of a soldier, and do each separate act at the bidding of the General.

To the rational being only the irrational is unendurable, but the rational is endurable.