Isaac Newton Quotes


To any action there is always an opposite and equal reaction; in other words, the actions of two bodies upon each other are always equal and always opposite in direction.


Citations

Newton, Isaac. The Principia: Mathematical Principles of Natural Philosophy. Translated by I. Bernard Cohen and Anne Whitman, University of California Press, 1999, p. 417.

Related Quotes

Many have extrapolated this physical notion to diplomatic, military, and political affairs.


This very famous quotation says that the total amount of energy in a system always remains the same. It may, change from one form to another like heat to light, but it is always there in one form or another.


Isaac Newton
Isaac Newton
  • Born: January 4, 1643
  • Died: March 31, 1727
  • Nationality: English
  • Profession: Mathematician

Sir Isaac Newton PRS was an English mathematician, physicist, astronomer, theologian, and author (described in his time as a "natural philosopher") who is widely recognised as one of the greatest mathematicians and most influential scientists of all time and as a key figure in the scientific revolution. His book Philosophiæ Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy), first published in 1687, established classical mechanics. Newton also made seminal contributions to optics, and shares credit with Gottfried Wilhelm Leibniz for developing the infinitesimal calculus.