The paragraph is followed by an incomplete phrase or sentence which summarizes the main idea of the paragraph. Choose the missing words of the phrase or sentence.

Richard Wagner’s liking for his friends was measured solely by the completeness of their devotion to him, or by their usefulness to him, whether financial or artistic. The minute they failed him — even by so much as refusing a dinner invitation — or began to lessen in usefulness, he cast them off without a second thought.
Richard Wagner was completely （） in his personal relationships.