Life is a tragedy
Don't go around saying the world owes you a living. The world owes you nothing. It was here first.
Life is like a trumpet - if you don't put anything into it, you don't get anything out of it.
Do not dwell in the past, do not dream of the future, concentrate the mind on the present moment.
A life of leisure and a life of laziness are two things. There will be sleeping enough in the grave.
The true secret of happiness lies in taking a genuine interest in all the details of daily life.