Study the past if you want to define the future.

What you dislike in your superiors, avoid doing to your inferiors. What you dislike in your inferiors, avoid doing when working for your superiors. What you hate in those who are in front of you, do not do to those behind you.

The one who was born a genius can't win against the one who tries, and the one who tries can't win against the one who enjoys.

It is when those who are not strong enough have made some moderate amount of progress that they fail and give up.

At fifteen my mind was directed to study, and at thirty I knew where to stand.

The sun and moon shine on all without partiality.

Forget injuries, never forget kindnesses.