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

Nature is a light, and by looking at Nature in her own light we will understand her. Visible Nature may be seen in her visible light; invisible Nature may become visible if we acquire the power to perceive her invisible light.

For it is we who must pray for our daily bread, and if He grants it to us, it is only through our labour, our skill and preparation.

Men who are devoid of the power of spiritual perception are unable to recognize anything that cannot be seen externally.

The ultimate cause of human disease is the consequence of our transgression of the universal laws of life.

Time is a brisk wind, for each hour it brings something new.

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