Virtue does not consist in the absence of the passions, but in the control of them.
It is easy to assume a habit; but when you try to cast it off, it will take skin and all.
It is a great art to be superior to others without letting them know it.
Pity costs nothing, and it ain't worth nothing.
There is only one good substitute for the endearments of a sister, and that is the endearments of some other fellow's sister.
Metaphysics is the science of proving what we don't understand.