Hippocrates (460 BC - 377 BC), Greek physician

Walking is man's best medicine.

As to diseases make a habit of two things - to help, or at least, to do no harm.

Healing is a matter of time, but it is sometimes also a mater of opportunity.

What drugs will not cure, the knife will; what the knife will not cure, the cautery will; what the cautery will not cure must be considered incurable.

Hard work is undesirable for the underfed.

It is better to be full of drink than full of food.

Hunger is alleviated by the drinking of neat wine.

Natural forces within us are the true healers of disease.

Everything in excess is opposed to nature.

Make a habit of two things: to help; or at least to do no harm.

There are only two things, science and opinion; the former begets knowledge, the latter ignorance.

The life so short, the craft so long to learn.

Nature acts without masters.

To know the cause of a disease and to understand the use of the various methods by which disease may be prevented amounts to the same thing in effect as being able to cure the malady.

To do nothing is also a good remedy.

Life is short, science is long; opportunity is elusive, experiment is dangerous, judgement is difficult.

Disease has a plurality of forms and a plurality of cures.

A wise man ought to realize that health is his most valuable possession and learn how to treat his illnesses by his own judgement.

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

Things that are holy are revealed only to men who are holy.

Idleness and lack of occupation tend - nay are dragged - towards evil.

A wise man should consider that health is the greatest of human blessings, and learn how by his own thought to derive benefit from his illnesses.

Many admire, few know.

Prayer indeed is good, but while calling on the gods a man should himself lend a hand.

To do nothing is sometimes a good remedy.