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.

Silence is not only never thirsty, but also never brings pain or sorrow.

Cure sometimes, treat often, comfort always.

Get knowledge of the spine, for this is the requisite for many diseases

I have clearly recorded this: for one can learn good lessons also from what has been tried but clearly has not succeeded, when it is clear why it has not succeeded.

Rest as soon as there is pain.

Time is that wherein there is opportunity, and opportunity is that wherein there is no great time.