Friedrich Nietzsche on Contradiction

“One is fruitful only at the cost of being rich in contradictions.”

“After all, what would be "beautiful" if the contradiction had not first become conscious of itself, if the ugly had not first said to itself: "I am ugly"?”

“We must be physicists in order to be creative since so far codes of values and ideals have been constructed in ignorance of physics or even in contradiction to physics.”