It is with the heart that one sees rightly; what is essential is invisible to the eye.

Anyone can become angry—that is easy. But to be angry with the right person , to the right degree, at the right time, for the right purpose, and in the right way—that is not easy.

It is the mark of an educated mind to be able to entertain a thought without accepting it.

The aim of the wise is to not secure pleasure, but to avoid pain.

Through discipline comes freedom.

Be a free thinker and don’t accept everything you hear as truth. Be critical and evaluate what you believe in.

We are what we repeatedly do. Excellence, then, is not an act, but a habit.

You will never do anything in this world without courage. It is the greatest quality of the mind next to honor.

Dignity consists not in possessing honors, but in the consciousness that we deserve them.

Man is a goal-seeking animal. His life only has meaning if he is reaching out and striving for his goals.