2 William James, The Principles of Psychology (1890).

3 To accept these statements one has to be familiar with the empiricist school and the works of Locke and Hume. We are to thank the empiricist school for the development of natural physical laws, such as Newtonian laws. That we should proceed by our senses, as we have in scientific theory, and accept only that which is consistent and coherent with past experiences, is equally applicable to philosophic thought; this proposition has been fully developed by Sir Karl Popper; see in particular, The Open Society and Its Enemies (1945) (Princeton University Press, 1971).

4 See, generally, the works of the imminent zoologist, Sir Julian Huxley (1887-1975).

5 Hazlitt, The Spirit of the Age (1825); (Oxford University Press, 1970) at p. 162.

6 The French encyclopaedist, Helvetius (1715-71).

7 Elsewhere in his writings, Hazlitt says the "breaking the husk of a prejudice may reveal either a maggot of a rotten canker or a precious kernel of truth."

8 This idea -- that man has developed in an evolutionary fashion not only biologically but also culturally -- has been developed in the writings of David Hume, a philosopher to whom we have already referred. Like the lot of all animals, humans evolved in accordance with certain natural rules, in that "no form can persist unless it possesses those powers and organs necessary for its subsistence: some new order or economy must be tried and so on, without intermission; until at last some order which can support and maintain itself, is fallen upon."

9 Though few in number, there are exceptions; such as the instinct we might know as "mother love."

10 James Anthony Froude's, essay "The Science of History."

11 Hazlitt.

12 Maurice Henry Hewlett's, (1861-1923) essay, "The Crystal Vase."

13 Herbert Spencer.