Immature love says: I love you because I need you. Mature love says: I need you because I love you.
Progress is impossible without change, and those who cannot change their minds cannot change anything.
To be yourself in a world that is constantly trying to make you something else is the greatest accomplishment.
The greatest happiness you can have is knowing that you do not necessarily require happiness.
Happiness is the only sanction of life; where happiness fails, existence remains a mad and lamentable experience.
If there be any truer measure of a man than by what he does, it must be by what he gives.