Think as the wise men think, but talk like the simple people do.
Plato is dear to me, but dearer still is truth.
It is simplicity that makes the uneducated more effective than the educated when addressing popular audiences.
Courage is a mean with regard to fear and confidence.
Nature does nothing in vain.
The senses are gateways to the intelligence. There is nothing in the intelligence which did not first pass through the senses.