In teaching there should be no distinction of classes.
Ignorance is the night of the mind, but a night without moon or star.
When nature exceeds culture, we have the rustic. When culture exceeds nature, we have the pedant.
Man shoot at nothing, sure to hit it.
Expect much from yourself and little from others and you will avoid incurring resentments
Not to mend one's ways when one has erred is to err indeed.