I have never seen the Philosopher's Stone that turns lead into Gold, but I have known the pursuit of it turn a Man's Gold into Lead.

Use no hurtful deceit; think innocently and justly and, if you speak, speak accordingly.

Sloth, like rust, consumes faster than labor wears, while the used key is always bright.

Wise men don't need advice. Fools won't take it.

The one who fails to prepare is preparing to fail.

Take a coin from your purse and invest it in your mind. It will come pouring out of your mind and overflow your purse.

Whoever would overthrow the liberty of a nation must begin by subduing the freeness of speech.