It is as the father of the Encyclopedia that Denis Diderot merits eternal recognition. Guilty as he was in almost every relation of life towards the individual, for mankind, in the teeth of danger and of infidelity, at the ill-paid sacrifice of the best years of his exuberant life, he produced that book which first levelled a free path to knowledge and enfranchised the soul of his generation.

Ch. 2 : Diderot : The Talker, p. 61 - The Friends of Voltaire (1906)