The Dawn

Everything has its day.— When man gave all things a sex he thought, not that he was playing, but that he had gained a profound insight:—it was only very late that he confessed to himself what an enormous error this was, and perhaps even now he has not confessed it completely.— In the same way man has ascribed to all that exists a connection with morality and laid an ethical significance on the world's back. One day this will have as much value, and no more, as the belief in the masculinity or femininity of the sun has today.
The Dawn
Thoughts on the Prejudices of morality.
by Nietzsche

http://www.publicappeal.org/library/nietzsche/Nietzsche_the_dawn_or_daybreak/the_dawn.htm