"...Freedom of the will is of a wholly unique nature in that an incentive can determine the will to an action only so far as the individual has incorporated it into his maxim (has made it the general rule in accordance with which he will conduct himself); only thus can an incentive, whatever it may be, co-exist with the absolute spontaneity of the will (i.e., freedom)."

"He who would know the world must first manufacture it."

"Das Lachen ist der Gesundheit zuträglich, denn es fördert die Verdauung."