Day 29

Newton, I. (1642-1727)

Absolute true and mathematical time flows equably without relation to anything external ... relative, apparent and common time is some sensible and external measure of duration. Absolute space ... without relation to anything external remains always similar and immovable. Relative space is some moveable measure of the absolute spaces.

Philosophiae naturalis principia mathematica (1687) translated by F. Cajori, (University of California Press, 1947) cited by S. Sambursky in Physical Thought from the Presocratics to the Quantum Physi­cists (Hutchinson, London, 1974) p. 300.