All our knowledge originates in opinion.
The study of what is excellent is food for the mind and body.
Just as a well-filled day brings blessed sleep, so a well-employed life brings a blessed death.
The motions of men must be such as suggest their dignity or their baseness.
It is easier to contend with evil at the first than at the last.
Make your faces so that they do not all have the same expression, as one sees with most painters, but give them different expression, according to age, complexion, and good or bad character.