dogmas. A few brave minds rebelled against this unnatural imprisonment of the intellect, with the usual consequences. Peter Abelard was condemned for his scepticism at a council at Sens in 1140; the philosophy of John Scotus Erigena was condemned for its pantheistic ideas a council at Sens in 1225; and the pantheistic views of Bruno had much to do with his martyrdom in the year 1600.
Montaigne, the pioneer of modern scepticism, gave voice to his repugnance for dogmas in his brilliant Essays, in which he stated that all religious opinions are the result of custom; and that he doubted if, out of the immense number of religious opinions, there were any means of ascertaining which were accurate. Bacon, Hobbes, Locke, and Descartes were the inaugurators of a school of thought which is characterized by its practical spirit; and while these men professed theistic beliefs, their systems of thought had done much, when applied and amplified by their followers, to undermine that belief. These men furnished the source of a later agnosticism.
Thomas Hobbes agreed with Bacon and Galileo that all knowledge starts from experience, and, carrying out the inductive method of Bacon, he produced his "Leviathan" in 1651. It was promptly attacked by the clergy of every country in Europe. Hobbes says of the immortality of the soul, "It is a belief grounded upon other men's sayings that they knew it supernaturally; or that they knew those who knew them, that knew others that knew it supernaturally."
Locke concerned himself with a philosophic inquiry into the nature of the mind itself, and was looked upon as a destroyer of the faith. Descartes based his philosophy on the rejection of authority in favor of human reason for which his works were honored by being placed
