The greatest thing by far is to have a command of metaphor. This alone cannot be imparted by another; it is the mark of genius, for to make good metaphors implies an eye for resemblances.
Hippocrates is an excellent geometer but a complete fool in everyday affairs.
A man can make up his mind quickly when he has only a little to make up.
You are what you repeatedly do
Consider pleasures as they depart, not as they come.
Every formed disposition of the soul realizes its full nature in relation to and dealing with that class of objects by which it is its nature to be corrupted or improved.