What Des-Cartes did was a good step. You have added much several ways, & especially in taking the colours of thin plates into philosophical consideration. If I have seen further it is by standing on the sholders of Giants.

Isaac Newton (1642–1727) English physicist and mathematician
Letter to Robert Hooke (5 Feb 1676)

In the Gregorian calendar, 15 Feb 1676.See Bernard of Chartres.