For all good and evil, whether in the body or in human nature, originates ... in the soul, and overflows from thence, as from the head into the eyes.
Science is nothing but perception.
Those who practice philosophy in the right way are in training for dying and they fear death least of all men.
Knowledge is the rediscovering of our own insight.
Numbers are the highest degree of knowledge. It is knowledge itself.
Where love reigns, there's no need for laws.