We weed out the darnel from the corn and the unfit in war, but do not excuse evil men from the service of the state.
The advantages of philosophy? That I am able to hold converse with myself.
Wealth and poverty do not lie in a man's estate, but in men's souls.
The investigation of the meaning of words is the beginning of education.
Observe your enemies, for they first find out your faults.
Not to unlearn what you have learned is the most necessary kind of learning.