Beauty of style and harmony and grace and good rhythm depend on simplicity - I mean the true simplicity of a rightly and nobly ordered mind and character, not that other simplicity which is only a euphemism for folly.

I have hardly ever known a mathematician who was capable of reasoning.

Attention to health is life greatest hindrance.

The function of the wing is to take what is heavy and raise it up in the region above.

A sensible man will remember that the eyes may be confused in two ways - by a change from light to darkness or from darkness to light; and he will recognize that the same thing happens to the soul.

The cure of many diseases is unknown to physicians because they are ignorant of the whole... For the part can never be well unless the whole is well.

If one has made a mistake, and fails to correct it, one has made a greater mistake.