Authors:

A man provided with paper, pencil, and rubber, and subject to strict discipline, is in effect a universal machine.

"Intelligent Machinery: A Report by A. M. Turing". Submitted to the National Physical Laboratory in 1948. "Key Papers: Cybernetics". Book edited by C. R. Evans and A. D. J. Robertson, 1968.
A man provided with paper, pencil, and rubber, and subject to strict discipline, is in effect a universal machine.