The famous agnostic Thomas Huxley was once lovingly confronted by a very sincere Christian. This believer stressed to Huxley that he was not in any way impugning Huxleys sincerity. Nevertheless, might it not be possible that mentally the great scientist was color blind? That is, some people cannot see traces of green where other people cannot help but see it. Could it be that this was Huxleys problemthat he was simply blind to truth that was quite evident to others? Huxley, being a man of integrity, admitted that this was possible, and added that if it were, he himself, of course, could not know or recognize it.