Be tolerant with others and strict with yourself.
If thou workest at that which is before thee ... expecting nothing, fearing nothing, but satisfied with thy present activity according to Nature, and with heroic truth in every word and sound which thou utterest, thou wilt live happy. And there is no man who is able to prevent this.
A man must stand erect, not be kept erect by others.
Tomorrow is nothing, today is too late; the good lived yesterday.
Don't go on discussing what a good person should be. Just be one.
Your mind will take on the character of your most frequent thoughts: souls are dyed by thoughts.