I suggest that the men and women who have given up religion because of the impact on their minds of modern science and philosophy were never truly religious in the first place, but only superstitious. The prevalence and predominance of science in our culture has cured a great many of the superstitious beliefs that constituted their false religiosity. The increase of secularism and irreligion in our society does not reflect a decrease in the number of persons who are truly religious, but a decrease in the number of those who are falsely religious; that is, merely superstitious. There is no question but that science is the cure for superstition, and, if given half the chance with education, it will reduce the amount that exists. The truths of religion must be compatible with the truths of science and the truths of philosophy. As scientific knowledge advances, and as philosophical analysis improves, religion is progressively purified of the superstitions that accidentally attach themselves to it as parasites. That being so, it is easier in fact to be more truly religious today than ever before, precisely because of the advances that have been made in science and philosophy. That is to say, it is easier for those who will make the effort to think clearly in and about religion, not for those whose addiction to religion is nothing more than a slavish adherence to inherited superstition. Throughout the whole of the past, only a small number of men were ever truly religious. The vast majority who gave their epochs and their societies the appearance of being religious were primarily and essentially superstitious.
Mortimer Adler