The following was QI Fact of the Day on 10th November 2011:
Sir Isaac Newton was a cold, austere and difficult man. The slightest criticism of his work drove him into a furious rage, and his life was blighted by vicious feuds with other eminent mathematicians. A hypochondriac, obsessive, neurotic homosexual, he had no friends to speak of.
What evidence is there to support the claim that Newton was a homosexual?