The Will to Power · Friedrich Wilhelm Nietzsche
814.
Artists are not men of great passion, despite all their assertions to the contrary both to themselves and to others. And for the following two reasons: they lack all shyness towards themselves (they watch themselves live, they spy upon themselves, they are much too inquisitive), and they also lack shyness in the presence of passion (as artists they exploit it). Secondly, however, that vampire, their talent, generally forbids them such an expenditure of energy as passion demands.--A man, who has a talent is sacrificed to that talent; he lives under the vampirism of his talent. A man does not get rid of his passion by reproducing it, but rather he is rid of it if he is able to reproduce it. (Goethe teaches the reverse, but it seems as though he deliberately misunderstood himself here--from a sense of delicacy.)
Text from Project Gutenberg, public domain in the United States.