Aristotle

Knowing yourself is the beginning of all wisdom.

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

The roots of education are bitter, but the fruit is sweet.

Pleasure in the job puts perfection in the work.

He who has overcome his fears will truly be free.

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

Happiness depends upon ourselves.

The secret to humor is surprise.