Quotes:Spencer, Herbert
Zirkoff, Boris
Spencer, Herbert (1820-1903). *“Genesis of Superstition,” Popular Science Monthly, March, 1875.—*The Principles of Sociology, London, 1876.—*Principles of Psychology, London, 1855.
Source: Boris de Zirkoff, «H. P. Blavatsky Collected Writings», vol. 2, p. 545
Spencer, Herbert (1820-1903). *“Religion: A Retrospect and Prospect,” in Nineteenth Century, Vol. XV, January, 1884.
Source: Boris de Zirkoff, «H. P. Blavatsky Collected Writings», vol. 6, p. 446
Spencer, Herbert (1820–1903). "Religion: A Retrospect and Prospect," in Nineteenth Century, Vol. XV, Jan., 1884.—First Principles, 1862; 6th ed., New York: D. Appleton, 1927.
Source: Boris de Zirkoff, «H. P. Blavatsky Collected Writings», vol. 8, p. 475
Spencer, Herbert (1820-1903). *First Principles, 1862; rev. ed., 1900.
Source: Boris de Zirkoff, «H. P. Blavatsky Collected Writings», vol. 11, p. 591