Refusal to believe until proof is given is a rational position; denial of all outside of our own limited experience is absurd.
"One last word to my Secularist friends.

If you say to me, 'Leave our ranks,' I will leave them; I force myself on no party, and the moment I feel myself unwelcome I will go.[29] It has cost me pain enough and to spare to admit that the Materialism from which I hoped all has failed me, and by such admission to bring on myself the disapproval of some of my nearest friends.

But here, as at other times in my life, I dare not purchase peace with a lie.

An imperious necessity forces me to speak the truth, as I see it, whether the speech please or displease, whether it bring praise or blame.

That one loyalty to Truth I must keep stainless, whatever friendships fail me or human ties be broken.