Raymond Smullyan, author, mathematician, and logician.
With his long white hair and beard, Professor Smullyan resembled Ian McKellen’s wizard, Gandalf, from the “Lord of the Rings” film series. He was lanky, hated exercise and loved steak and eggs. He studied Eastern religion. He told corny jokes and performed close-up magic to anyone near him. He played the piano with passion and talent into his 90s. (A career in music had been derailed by tendinitis when he was a young man.)