HEGEL

Set to 6 different clues across 6 published puzzles, most often “Georg who wrote "The Philosophy of Right"” — The New York Times, Tuesday, 19 February 2008.

5 letters

Every clue on record, most used first

Georg who wrote "The Philosophy of Right"once
The New York Times — Tuesday, 19 February 2008
"Phenomenology of Spirit" author, 1807once
The New York Times — Friday, 28 July 2006
He purportedly said "Only one man ever understood me, and he didn't understand me"once
The New York Times — Friday, 7 July 2006
"The Philosophy of Right" authoronce
The New York Times — Saturday, 30 October 2004
"The Philosophy of Right" philosopheronce
The New York Times — Monday, 24 September 2001
German metaphysicistonce
The New York Times — Sunday, 16 October 1994