One that desires to excel should endeavor in those things that are in themselves most excellent.

What is yours is to play the assigned part well. But to choose it belongs to someone else

The essence of good and evil is a certain disposition of the will.

Make it your business to draw out the best in others by being an exemplar yourself.

If we are not stupid or insincere when we say that the good or ill of man lies within his own will, and that all beside is nothing to us, why are we still troubled?

To a reasonable creature, that alone is insupportable which is unreasonable; but everything reasonable may be supported.

Reason is not measured by size or height, but by principle.