That that which is neither true nor truthlike does not exist. Now, whatever exists, exists otherwise in something else than it exists in itself.

Nothing could be more beneficial for even the most zealous searcher for knowledge than his being in fact most learned in that very ignorance which is peculiarly his own; and the better a man will have known his own ignorance, the greater his learning will be.

That that which is neither true nor truthlike does not exist. Now, whatever exists, exists otherwise in something else than it exists in itself.

In every science certain things must be accepted as first principles if the subject matter is to be understood; and these first postulates rest upon faith.

Life and perfection, joy and repose and whatever all the senses desire, lie in the distinguishing spirit, and from it they have everything that they have. Even if the organs lose in power and the life in them decreases in activity, it does not decrease in the distinguishing spirit, from which they receive the same life, when the fault or infirmity is removed.

Otherness cannot be a form. For to alter is to deform rather than to form. Therefore, that which is seen in different things can also be seen in and of itself without otherness, since otherness did not give being to it.

God says to man: 'Be thou thyself, and I shall be thine.'