
"Method in the Physical Sciences", in The Unity of Knowledge (1955), ed. L. G. Leary (Doubleday & Co., New York), p. 157
Attributed to George A. Kelly in Hinkle (1970, p. 91), as cited in: Fay Fransella and Robert A. Neimeyer. "George Alexander Kelly: The man and his theory." International handbook of personal construct psychology (2003): 21-31.
"Method in the Physical Sciences", in The Unity of Knowledge (1955), ed. L. G. Leary (Doubleday & Co., New York), p. 157
“The function of logic in mathematics is critical rather than constructive.”
100 Years of Mathematics: a Personal Viewpoint (1981)
Source: 1950s, The Skills of the Economist, 1958, p. 16-17 as cited in Andrew Mearman (2011).
Source: Quantum Reality - Beyond The New Physics, Chapter 1, The Quest For Reality, p. 2
“The history of mathematics throws little light on the psychology of mathematical invention.”
100 Years of Mathematics: a Personal Viewpoint (1981)
Source: Love and Math, 2013, p. 139
Source: A Brief History of Time (1988), Ch. 12
Context: Even if there is only one possible unified theory, it is just a set of rules and equations. What is it that breathes fire into the equations and makes a universe for them to describe? The usual approach of science of constructing a mathematical model cannot answer the questions of why there should be a universe for the model to describe. Why does the universe go to all the bother of existing?
“Pure mathematics is religion.”
Reine Mathematik ist Religion.
Blüthenstaub (1798), Unsequenced