I have no knowledge of myself as I am, but merely as I appear to myself. - Immanuel Kant

It would be impossible to represent to ourselves darkness, unless light had been given to the senses.

Rules for happiness: something to do, someone to love, something to hope for.

The question of the principle of the form of the intelligible world turns, therefore, upon making apparent in what manner it is possible for several substances to be in mutual commerce, and for this reason to pertain to the same whole, which is called world. We do not here consider the world, let it be understood, as to matter, that is, as to the nature of the substances of which it consists, whether they be material or immaterial, but as to form, that is to say, how among several things taken separately a connection, and among them all, totality can have place.