'Gentlemen, it is a fact that every philosopher of eminence
for the last two centuries has either been murdered, or, at the
least, been very near it, insomuch that if a man calls himself a
philosopher, and never had his life attempted, rest assured there
is nothing in him; and against Locke's philosophy in particular, I
think it is an unanswerable objection (if we needed any) that,
although he carried his throat about him in this world for
seventy-two years, no man ever condescended to cut it.'
-- Thomas de Quincey, 'Murder Considered as One of the Fine Arts' (quotation supplied by Kent Bach)
These lists, started by Stiv Fleishman, contain many new and revised entries, suggested by many other philosophers and added by D. H. Mellor, to whom further suggestions should be sent.