An insolent reply from a polite person is a bad sign.
Foolish the doctor who despises the knowledge acquired by the ancients.
Life is short, science is long; opportunity is elusive, experiment is dangerous, judgement is difficult.
Walking is man's best medicine.
Cure sometimes, treat often, comfort always.
Wherefore the heart and the diaphragm are particularly sensitive, they have nothing to do, however, with the operations of the understanding, but of all these the brain is the cause.