As A. Lalande notes in his Vocabulaire technique et critique de la philosophie (1962), pp. 348ff., Fideism is a theological expression, which applies to a trend of thought found in a number of writers who are inclined to restrict the power of reason with regard to knowledge of truths of the moral and religious order, in particular in establishing the credibility of faith. Fideism characterizes the kind of mind which spontaneously reacts against anything that appears to diminish the supernatural and gratuito…