Mathematics would certainly have not come into existence if one had known from the beginning that there was in nature no exactly straight line, no actual circle, no absolute magnitude.

Interest in Education will acquire great strength only from the moment when belief in a God and His care is renounced, just as the art of healing could only flourish when the belief in miracle cures ceased.

The will to power can express itself only against resistances; it seeks that which resists it--this is the native tendency of theamoeba when it extends its pseudopodia and gropes around.

About what we neither know nor feel precisely while awake-whether we have a good or a bad conscience toward a certain person-our dreams instruct us fully and unambiguously.

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

One is most dishonest to one's god: he is not allowed to sin.

I fear that, with our current veneration for the natural and the real, we have arrived at the opposite pole to all idealism, and have landed in the region of the waxworks.