Living well is the best revenge.

Know thyself, know thy enemy. A thousand battles, a thousand victories.

All knowledge is precious, whether or not it serves the slightest human use.

If we would have new knowledge, we must get a whole world of new questions.

Zeal without knowledge is fire without light.

Not life, but good life, is to be chiefly valued.

If the highest aim of a captain were to preserve his ship, he would keep it in port forever.

If we desire respect for the law, we must first make the law respectable.

Inspiration arrives as a packet of material to be delivered.

You are never too old to set another goal or to dream a new dream.