Dante, [133], [356], [364], [431].

Darwin, [12], [74], [317], [376].

Deduction, [62], [391].

Democracy, [184], [213].

Dewey, [11], [13], [67], [69], [73], [75], [107], [380], [389], [390], [398], [407], [408], [417], [420], [433], [447], [459].

Dickens, [172], [178].

Dickinson, G. Lowes, [271].

Differences, individual, and education, [186-87], [209-13]; causes of, [190-209]; in industry, [211-12]; in leadership, [119]; in reflection, [57], [394-95]: influence of environment on, [193], [199], [206-09]; of heredity, [202-06]; of race, [195-202]; of sex, [190-95].

Discontent, due to repression of instincts, [23-26].

Dislike. See Hate.