"If there were anything fixed in nature, if there were truths, all of this would, of course, be wrong. But fortunately, all truths are erroneous. This is the very essence of the dialectical process: today's truths become errors tomorrow; there is no final number. This truth (the only one) is for the strong alone. Weak-nerved minds insist on a finite universe, a last number; they need, in Nietzsche's words, "the crutches of certainty." The weak-nerved lack the strength to include themselves in the dialectic syllogism."