There are in fact two things, science and opinion. The former begets knowledge, the latter ignorance.
HippocratesMen 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.
HippocratesLife is short, art long, opportunity fleeting, experiment uncertain, and judgment difficult.
Hippocrates