What men have called friendship is only a social arrangement, a mutual adjustment of interests, an interchange of services given and received it is, in sum, simply a business from which those involved propose to derive a steady profit for their own self-love.

If we are to judge of love by its consequences, it more nearly resembles hatred than friendship.

In friendship as well as love, ignorance very often contributes more to our happiness than knowledge.

Philosophy finds it an easy matter to vanquish past and future evils, but the present are commonly too hard for it.

Good advice is something a man gives when he is too old to set a bad example.