The condition of man... is a condition of war of everyone against everyone.

They that approve a private opinion, call it opinion; but they that dislike it, heresy; and yet heresy signifies no more than private opinion.

There is no such thing as perpetual tranquility of mind while we live here.

Love is a person's idea about his/her needs in other person what you are attracted to.

As a draft-animal is yoked in a wagon, even so the spirit is yoked in this body

The science which teacheth arts and handicrafts is merely science for the gaining of a living; but the science which teacheth deliverance from worldly existence, is not that the true science?

As, in Sense, that which is really within us, is (as I have said before) only Motion, caused by the action of external objects, but in appearance; to the Sight, Light and Color; to the Ear, Sound; to the Nostril, Odor, &c.