The sum of wisdom is that time is never lost that is devoted to work.

The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom.

Excellence, then, is a state concerned with choice, lying in a mean, relative to us, this being determined by reason and in the way in which the man of practical wisdom would determine it.

The man who makes everything that leads to happiness depends upon himself, and not upon other men, has adopted the very best plan for living happily. This is the man of moderation, the man of manly character and of wisdom.

The virtue of justice consists in moderation, as regulated by wisdom.