La vida es una nebulosa. - Miguel de Unamuno

He who bases or thinks he bases his conduct — his inward or his outward conduct, his feeling or his action — upon a dogma or a principle which he deems incontrovertible, runs the risk of becoming a fanatic, and moreover, the moment that this dogma is weakened or shattered, the morality based upon it gives way. If the earth that he thought firm begins to rock, he himself trembles at the earthquake, for we do not all come up to the standard of the ideal Stoic who remains undaunted among the ruins of a world shattered into atoms. Happily the stuff that is underneath a man's ideas will save him. For if a man should tell you that he does not defraud or cuckold his best friend only because he is afraid of hell, you may depend upon it that neither would he do so even if he were to cease to believe in hell, but that he would invent some other excuse instead. And this is all to the honor of the human race.

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 very fact of being man, of possessing consciousness, is, in comparison with the ass or the crab, a diseased animal. Consciousness is a disease.

What the sorrowful Jew of Amsterdam called the essence of a thing, the effort that it makes to persist indefinitely in its own being, self-love, the longing for immortality, is it not perhaps the primal and fundamental condition of all reflective or human knowledge? And is it not therefore the true base, the real starting-point, of all philosophy, although the philosophers, perverted by intellectualism, do not recognize it?