From the deepest desires often come the deadliest hate.

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.

When desire, having rejected reason and overpowered judgment which leads to right, is set in the direction of the pleasure which beauty can inspire, and when again under the influence of its kindred desires it is moved with violent motion towards the beauty of corporeal forms, it acquires a surname from this very violent motion, and is called love.

The only place where success comes before work is in the dictionary.There is only one good, knowledge, and one evil, ignorance.

Nothing very new. By taking good care of yourselves you are of service to me and my family as well as yourselves, no matter what you do, even if you don't think so at present. But if you neglect yourselves and are unwilling to live, as though following tracks, in accordance with what we now say and have said in the past too, then no matter how much or how seriously you agree with me at present you will accomplish next to nothing.

To harm another is to harm oneself

All that we know is nothing can be known.