The black cat analogy
Philosophy is like being in a dark room and looking for a black cat.
Metaphysics is like being in a dark room and looking for a black cat that isn't there.
Theology is like being in a dark room and looking for a black cat that isn't there and shouting "I found it!"
Science is like being in a dark room and looking for a black cat using a flashlight.
Source: Found long ago on a now-abandoned website.