[10.] Schwegler—"History of Philosophy," Page 84.
[11.] Draper—"Intellectual Development of Europe," Vol. I, Page 147.
[12.] Xenophon—"Memorabilia," Page 8. (Dutton & Co., Every Man's Library).
[13.] Ibid—"Memorabilia, Page 29.
[14.] Ibid—"Memorabilia" Page 35.
[15.] Ibid—"Memorabilia," Page 21-23.
[16.] Gomperz—"History of Philosophy," Page 48.
[17.] Schwegler—"History of Philosophy," Page 75.
[18.] Xenophon's "Memorabilia," Page 417-418.
[19.] Plato—"Crito."