Apart from the fact there is no normal standard of health, nobody has proved that man is necessarily cheerful by nature. And further, man, by the ver… - Miguel de Unamuno

It is not usually our ideas that make us optimists or pessimists, but it is our optimism or pessimism that makes our ideas.

In fact, for a voluntarist like Schopenhauer, a theory so sanely and cautiously empirical and rational as that of Darwin, left out of account the inward force, the essential motive, of evolution. For what is, in effect, the hidden force, the ultimate agent, which impels organisms to perpetuate themselves and to fight for their persistence and propagation? Selection, adaptation, heredity, these are only external conditions. This inner, essential force has been called will on the supposition that there exists also in other beings that which we feel in ourselves as a feeling of will, the impulse to be everything, to be others as well as ourselves yet without ceasing to be what we are.

"God does not think, He creates; He does not exist, He is eternal," wrote Kierkegaard (Afslutende uvidenskabelige Efterskrift); but perhaps it is more exact to say with Mazzini, the mystic of the Italian city, that "God is great because his thought is action" (Ai giovani d'Italila), because with Him to think is to create, and He gives existence to that which exists in His thought by the mere fact of thinking it, and the impossible is unthinkable by God. It is not written in the Scriptures that God creates with His word — that is to say, with His thought — and that by this, by His Word, He made everything that exists? And what God has once made does He ever forget? May it not be that all the thoughts that have ever passed through the Supreme Consciousness still subsist therein? In Him, who is eternal, is not all existence eternalized?