56. The anonymous author of the long review of the Discourse in the Journal des Sçavans, October, 1751, p. 220, took exception to this statement in the following terms:
And [in the Discourse ] ethical truths have only an evidence of the heart, founded on the sentiment of the conscience, and completely different from the evidence of the intelligence attributed to speculative truths. Are not the first principles of ethics of an evidence recognized by the light of Reason? Do men have no rule for their action other than conscience? Has M. d’Alembert realized the frightful consequences of such a principle?
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