Wisdom teaches us to do, as well as to talk; and to make our words and actions all of a colour.
An age builds up cities: an hour destroys them.
He deserves praise who does not what he may, but what he ought.
He who receives a benefit with gratitude, repays the first installment of it.
We have not to talk, but to steer the vessel.
If you expect the wise man to be as angry as the baseness of crimes requires, then he must not only be angry but go insane.