What mad pursuit

What mad pursuit may refer to:
 * What Mad Pursuit: A Personal View of Scientific Discovery, a 1988 autobiography of Francis Crick
 * The first question on the ninth line of Keats' poem Ode on a Grecian Urn
 * What Mad Pursuit, a 2013 documentary by Rob Nilsson
 * What Mad Pursuit, a 1934 book by Martha Gellhorn
 * "What Mad Pursuit", a short story by Noël Coward