Walking is man's best medicine.

Each of the substances of a man's diet acts upon his body and changes it in some way and upon these changes his whole life depends.

Walking is man's best medicine.

The human soul develops up to the time of death.

Where prayer, amulets and incantations work it is only a manifestation of the patient's belief.

War is the only proper school of the surgeon.

The human body contains blood, phlegm, yellow bile and black bile. These are the things that make up its constitution and cause its pain and health. Health is primarily that state in which these constituent substances are in the correct proportion to each other, both in strength and quantity, and are well mixed.