The circle must be closed. — He who has followed a philosophy or a species of thought to the end of its course and then around the end will grasp from his inner experience why the masters and teachers who came afterwards turned away from it, often with an expression of deprecation. For, though the circle has to be circumscribed, the individual, even the greatest, sits firmly on his point of the periphery with an inexorable expression of obstinacy, as though the circle ought never to be closed.

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Doubt as sin. — Christianity has done its utmost to close the circle and declared even doubt to be sin. One is supposed to be cast into belief without reason, by a miracle, and from then on to swim in it as in the brightest and least ambiguous of elements: even a glance towards land, even the thought that one perhaps exists for something else as well as swimming, even the slightest impulse of our amphibious nature — is sin! And notice that all this means that the foundation of belief and all reflection on its origin is likewise excluded as sinful. What is wanted are blindness and intoxication and an eternal song over the waves in which reason has drowned!

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A few rungs down. — One level of education, itself a very high one, has been reached when man gets beyond superstitious and religious concepts and fears and, for example, no longer believes in the heavenly angels or original sin, and has stopped talking about the soul’s salvation. Once he is at this level of liberation, he must still make a last intense effort to overcome metaphysics. Then, however, a retrograde movement is necessary: he must understand both the historical and the psychological justification in metaphysical ideas. He must recognize how mankind’s greatest advancement came from them and how, if one did not take this retrograde step, one would rob himself of mankind’s finest accomplishments to date.

With regard to philosophical metaphysics, I now see a number of people who have arrived at the negative goal (that all positive metaphysics is an error), but only a few who climb back down a few rungs. For one should look out over the last rung of the ladder, but not want to stand on it. Those who are most enlightened can go only as far as to free themselves of metaphysics and look back on it with superiority, while here, as in the hippodrome, it is necessary to take a turn at the end of the track.

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One should not be deceived: great spirits are skeptics… Strength, freedom which is born of the strength and overstrength of the spirit, proves itself by skepticism. Men of conviction are not worthy of the least consideration in fundamental questions of value and disvalue. Convictions are prisons. Such men do not look far enough, they do not look beneath themselves: but to be permitted to join in the discussion of value and disvalue, one must see five hundred convictions beneath oneself — behind oneself … A spirit who wants great things, who also wants the means to them, is necessarily a skeptic. Freedom from all kinds of convictions, to be able to see freely, is part of strength … Great passion, the ground and the power of his existence, even more enlightened, even more despotic than he is himself, employs his whole intellect; it makes him unhesitating; it gives him courage even for unholy means; under certain circumstances it does not begrudge him convictions. Conviction as a means: many things are attained only by means of a conviction. Great passion uses and uses up convictions, it does not succumb to them — it knows itself sovereign…