The partisan when he is engaged in a dispute, cares nothing about the rights of the question, but is anxious only to convince his hearers of his own assertions.

Besides, it is a shame to let yourself grow old through neglect before seeing how you can develop the maximum beauty and strength of body; and you can have this experience if your are negligent, because these things don't normally happen by themselves.

The greatest blessing granted to mankind come by way of madness, which is a divine gift.

Are not all things which have opposites generated out of their opposites?

The heart of the person before you is a mirror. See there your own form.

The invention of writing will produce forgetfulness in the minds of those who learn to use it, because they will not practice their memory. Their trust in writing, produced by external characters which are no part of themselves, will discourage the use of their own memory within them. You have invented an elixir not of memory, but of reminding; and you offer your pupils the appearance of wisdom, not true wisdom.

The friend must be like money, that before you need it, the value is known.