...all the most acute, most powerful, and most deadly diseases, and those which are most difficult to be understood by the inexperienced, fall upon the brain.

There are in fact two things, science and opinion. The former begets knowledge, the latter ignorance.

Men ought to know that from the brain, and from the brain only, arise our pleasures, joy, laughter and jests, as well as our sorrows, pains, griefs, and tears.

The art is long, life is short

Life is short, art long, opportunity fleeting, experiment uncertain, and judgment difficult.

It is changes that are chiefly responsible for diseases, especially the greatest changes, the violent alterations both in the seasons and in other things. (:)...regimen and temperature, and one period of life to another.

Look to the seasons when choosing your cures