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

Since nothing is so secret or hidden that it cannot be revealed, everything depends on the discovery of those things that manifest the hidden.

Time is a brisk wind, for each hour it brings something new... but who can understand and measure its sharp breath, its mystery and its design?

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

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

He who knows nothing loves nothing. He who can do nothing understands nothing. He who understands nothing is worthless. But he who understands also loves, notices, sees. The more knowledge is inherent in a thing, the greater the love.

Nothing is hidden so much that it wouldn't be revealed through its fruit.