Certainty (n.) drives one insane, not doubt — we are all afraid of truth.
Certainty (n.) as the principle of modern metaphysics is grounded in nothing but the will to power's need to secure itself.
Certainty (n.) is a question of the second rank: it becomes serious only once the question of values has already been answered.
Certainty (n.) in the impetuous demand for it, now in positivist form, is the same instinct of weakness that does not create religions and metaphysics but conserves them.
Certainty (n.) in science is astonishing in a world where all human laws and concepts keep changing: here are laws whose truth no individual can reach.
Certainty (n.) in Parmenides' prayer asks the gods for but one certainty, if it be but a log's breadth on which to ride upon the sea of uncertainty, and to take away everything that comes to be, everything lush.
Certainty (n.) is not necessarily better than uncertainty and the open seas; Zarathustra prescribes courage and delight in the untried to the overly conscientious.
Certainty (n.) called immediate is a contradiction in terms, and inside the sentence I think hides a whole series of daring assertions, that it is I who think, that thinking is the work of a cause, and that it is already known what thinking is.