An agnostic is a doubter. The word is generally applied to those who doubt the verity of accepted religious creeds of faiths. Everyone is an agnostic as to the beliefs or creeds they do not accept. Catholics are agnostic to the Protestant creeds, and the Protestants are agnostic to the Catholic creed. Any one who thinks is an agnostic about something, otherwise he must believe that he is possessed of all knowledge. And the proper place for such a person is in the madhouse or the home for the feeble-minded. In a popular way, in the western world, an agnostic is one who doubts or disbelieves the main tenets of the Christian faith.

I would say that belief in at least three tenets is necessary to the faith of a Christian: a belief in God, a belief in immortality, and a belief in a supernatural book. Various Christian sects require much more, but it is difficult to imagine that one could be a Christian, under any intelligent meaning of the word, with less. Yet there are some people who claim to be Christians who do not accept the literal interpretation of all the Bible, and who give more credence to some portions of the book than to others.

I am an agnostic as to the question of God. I think that it is impossible for the human mind to believe in an object or thing unless it can form a mental picture of such object or thing…

The reasons for agnosticism are abundant and compelling. Fantastic and foolish and impossible consequences are freely claimed for the belief in religion. All the civilization of any period is put down as a result of religion. All the cruelty and error and ignorance of the period has no relation to religion.

The truth is that the origin of what we call civilization is not due to religion but to skepticism. So long as men accepted miracles without question, so long as they believed in original sin and the road to salvation, so long as they believed in a hell where man would be kept for eternity on account of Eve, there was no reason whatever for civilization: life was short, and eternity was long, and the business of life was preparation for eternity.

When every event was a miracle, when there was no order or system or law, there was no occasion for studying any subject, or being interested in anything excepting a religion which took care of the soul. As man doubted the primitive conceptions about religion, and no longer accepted the literal, miraculous teachings of ancient books, he set himself to understand nature. We no longer cure disease by casting out devils. Since that time, men have studied the human body, have built hospitals and treated illness in a scientific way. Science is responsible for the building of railroads and bridges, of steamships, of telegraph lines, of cities, towns, large buildings and small, plumbing and sanitation, of the food supply, and the countless thousands of useful things that we now deem necessary to life. Without skepticism and doubt, none of these things could have been given to the world.

The fear of God is not the beginning of wisdom. The fear of God is the death of wisdom. Skepticism and doubt lead to study and investigation, and investigation is the beginning of wisdom.

The modern world is the child of doubt and inquiry, as the ancient world was the child of fear and faith.