Others reject Swedenborg's visions. Walter Ralston Martin quoted a critic that Swedenborg's spiritual experiences "were admittedly of such a character, that in an ordinary man they would have sufficed to qualify him for an asylum." According to Martin, however, his theological writings were so systematic that "no one can reasonably say that Swedenborg was insane": "Swedenborg was a rationalist, and paradoxically, a mystic. He was one who absorbed the introspective and subjective philosophy of Rene Descartes, and the empiricism of John Locke, which he combined with the transcendentalism of lmmanuel Kant, thus forming a mold into which Christian theology was poured, and what would not go into the mold (selected Old Testament works, the Pauline epistles, Acts, James, Peter, Jude, etc.), he simply discarded. What emerged was a deeply speculative philosophical system of theology, couched in a redefined Christian terminology, and buttressed with mystical visions, trances, and dreams."