Nothing endures but change. There is nothing permanent except change. All is flux, nothing stays still.
Eternity is a child playing, playing checkers; the kingdom belongs to a child.
There is harmony in the tension of opposites, as in the case of the bow and lyre.
A hidden connection is stronger than an obvious one.
Doctors cut, burn, and torture the sick, and then demand of them an undeserved fee for such services.
Men who love wisdom should acquaint themselves with a great many particulars.