Quacks pretend to cure other men's disorders, but fail to find a remedy for their own.
Nothing is difficult in the eyes of a lover.
There is no castle so strong that it cannot be overthrown by money.
Inability to tell good from evil is the greatest worry of man's life.
If a man aspires to the highest place, it is no dishonor to him to halt at the second, or even at the third.
When you wish to instruct, be brief; that men's [children's] minds take in quickly what you say, learn its lesson, and retain it faithfully. Every word that is unnecessary only pours over the side of a brimming mind.