Enjoy what you can, endure what you must.

What we agree with leaves us inactive, but contradiction makes us productive.

Mastery is often taken for egotism.

Perseverance is a silent power that grows irresistibly greater with time.

I never believed in trying to do anything. Whatever I set out to do I found I had already accomplished.

There is nothing more frightful than for a teacher to know only what his scholars are intended to know.

To tremble before anticipated evils is to bemoan what thou hast never lost.