“Behold, ye Fair! how radiant Colours glow,
What dyes the Rose; what paints the heav’nly Bow,
The purpling Shade, the rich refracted Ray,
And all th’ unblended Beams of various Day.”

—Henry Jones, Philosophy, from Poems on Several Occasions, 1749; quoted by Marjorie Hope Nicolson in Newton Demands the Muse, 1946.