Human nature refers to what is in people but which they cannot study or work at achieving.
A physician without a knowledge of Astrology has no right to call himself a physician.
Everything in excess is opposed to nature.
Whenever a doctor cannot do good he must be kept from doing harm.
There are in fact two things science and opinion the former begets knowledge...
Nothing is so threatening to conventional values as a man who does not...
Ignorance more frequently begets confidence than does knowledge: it is...
No thief, however skillful, can rob one of knowledge, and that is why...
