As you talk, so is your heart.

It is said that a wise man rules over the stars, but this does not mean that he rules over the influences which come from the stars in the sky. It means that he rules over the powers which exist in his own constitution.

The dreams which reveal the supernatural are promises and messages that God sends us directly: they are nothing but His angels, His ministering spirits , who usually appear to us when we are in a great predicament.

Medicine rests upon four pillars - philosophy, astronomy, alchemy, and ethics.

The universities do not teach all things ... so a doctor must seek out old wives, gypsies, sorcerers, wandering tribes, old robbers, and such outlaws and take lessons from them. A doctor must be a traveller . . . Knowledge is experience.

Every physician must be rich in knowledge, and not only of that which is written in books; his patients should be his book, they will never mislead him.

Could we but rightly comprehend the mind of man, nothing would be impossible to us upon the earth.