There are atheists that are simply comfortable removing the shackles from their own minds, but there are others that want to free others — and those in between.
Some of them could probably go about it a different way. If you present people with reason and rational arguments, and let them realize that they really do have a choice, they will eventually gain the strength to reject religion. And more and more people are...
For the materialist who debunks everyone else's ideas as the subrational products of their brain chemistry or environment cannot avoid being debunked himself. If he is honest, says Lewis, the materialist will have to admit that his own ideas are merely the "epiphenomenon which accompanies chemical or electrical events in a cortex which is itself the by-product of a blind evolutionary process."