Joshua G. Fitch. The art of questioning https://archive.org/stream/artofquestioning00fitcrich#page/n7/mode/2up. 9th edition. Published 1879. pp. 78
Famous Joshua Girling Fitch Quotes
Source: Lectures on Teaching, (1906), pp. 267-268.
The Fourth Dimension simply Explained. (New York, 1910), p. 58. Reported in Moritz (1914); Also cited in: Howard Eves (2012), Foundations and Fundamental Concepts of Mathematics, p. 167
Source: Lectures on Teaching, (1906), pp. 292-293.
Joshua G. Fitch. The art of questioning https://archive.org/stream/artofquestioning00fitcrich#page/n7/mode/2up. 9th edition. Published 1879. pp. 78-79
Source: Lectures on Teaching, (1906), pp. 291-292