D’Epinay, Monsieur, i. 254; ii. 26.

Descartes, i. 87, 225; ii. 267.

Deux Ponts, Duc de, Rousseau’s rude reply to, i. 207.

D’Holbach, i. 192;
  Rousseau’s dislike of his materialistic friends, i. 223;
     ii. 37, 256.

D’Houdetot, Madame, i. 255-270;
  Madame d’Epinay’s jealousy of, i. 278;
  mentioned, ii. 7;
  offers Rousseau a home in Normandy, ii. 117.

Diderot, i. 64, 89, 133;
  tries to manage Rousseau, i. 213;
  his domestic misconduct, i. 215;
  leader of the materialistic party, i. 223;
  on Solitary Life, i. 232;
  his active life, i. 233;
  without moral sensitiveness, i. 262;
  mentioned, i. 262, 269, 271;
     ii. 8;
  his relations with Rousseau, i. 271;
  accused of pilfering Goldoni’s new play, i. 275;
  his relations and contentions with Rousseau, i. 275, 276;
  lectures Rousseau about Madame d’Epinay, i. 284;
  visits Rousseau after his leaving the Hermitage, i. 289;
  Rousseau’s final breach with, i. 336;
  his criticism, and plays, ii. 34;
  his defects, ii. 34;
  thrown into prison, ii. 57;
  his difficulties with the Encyclopaedists, ii. 57;
  his papers saved from the police by Malesherbes, ii. 62.

Dijon, academy of, i. 132.

Discourses, The, Circumstances of the composition of the first
     Discourse, i. 133-136;
  summary of it, i. 138-145
     disastrous effect of the progress of sciences and arts, i.
          140, 141;
     error more dangerous than truth useful, i. 141;
     uselessness of learning and art, i. 141, 142;
     terrible disorders caused in Europe by the art of printing, i.
          143;
     two kinds of ignorance, i. 144;
  the relation of this Discourse to Montaigne, i. 145;
  its one-sidedness and hollowness, i. 148;
  shown by Voltaire, i. 148;
  its positive side, i. 149, 150;
  second Discourse, origin of the Inequality of Man, i. 154;
  summary of it, i. 159, 170;
     state of nature, i. 150, 162;
     Hobbes’s mistake, i. 161;
     what broke up the “state of nature,” i. 164;
     its preferableness, i. 166, 167;
     origin of society and laws, i. 168;
     “new state of nature,” i. 169;
     main position of the Discourse, i. 169;
  its utter inclusiveness, i. 170;
  criticism on its method, i. 170;
  on its matter, i. 172;
  wanting in evidence, i. 172;
  further objections to it, i. 173;
  assumes uniformity of process, i. 176;
  its unscientific character, i. 177;
  its real importance, i. 178;
  its protest against the mockery of civilisation, i. 178;
  equality of man, i. 181;
  different effects of this doctrine in France and the United States
     explained, i. 182, 183;
  discovers a reaction against the historical method of Montesquieu,
     i. 183, 184;
  pecuniary results of, i. 196;
  Diderot’s praise of first Discourse, i. 200;
  Voltaire’s acknowledgement of gift of second Discourse, i. 308;
  the, an attack on the general ordering of society, ii. 22;
  referred to, ii. 41.