C.S. Lewis:
Good philosophy must exist, if for no other reason, because bad philosophy needs to be answered. . . .
G.K. Chesteron:
Men have always one or two things: either a complete and conscious philosophy or the unconscious acceptance of the broken bits of some incomplete and often discredited philosophy…. Philosophy is merely thought that has been thought out. It is often a great bore. But man has no alternative, except being influenced by thought that has been thought out and being influenced by thought that has not been thought out.
C.S. Lewis