Newton, Isaac -- (Attributed)

Dave — Thu, 14 Jan 2021 22:21:04 +0000

I can calculate the movement of the stars, but not the madness of the people.

Isaac Newton (1642-1727) English physicist and mathematician
(Attributed)
(Source)

Supposedly after the ruinous stock price collapse of the "South Sea Bubble" in 1720, in which Newton lost £20,000.

The earliest mention of this is found in Joseph Spence, Second Memorandum Book (1756), collected in Joseph Spence (ed. Samuel Weller Singer), Anecdotes, Observations, and Characters, of Books and Men (1820). There a Lord Radnor is quoted as saying: "When Sir Isaac Newton was asked about the continuance of the rising of South Sea stock? — He answered, 'that he could not calculate the madness of the people.'" (Note that this supposedly takes place before the bubble bursts.)

Variants:

I can calculate the motions of erratic bodies, but not the madness of a multitude. ["Mammon and the Money Market," The Church of England Quarterly Review (1850)]
I can calculate the motions of the heavenly bodies, but not the madness of people.
I can calculate the motions of heavenly bodies but not the madness of men.
I can calculate the movement of stars, but not the madness of men.

Roosevelt, Theodore -- Speech (1910-08-31), “The New Nationalism,” John Brown Memorial Park dedication, Osawatomie, Kansas

Dave — Tue, 19 Jun 2012 13:37:09 +0000

No man should receive a dollar unless that dollar has been fairly earned. Every dollar received should represent a dollar’s worth of service rendered — not gambling in stocks, but service rendered. The really big fortune, the swollen fortune, by the mere fact of its size acquires qualities which differentiate it in kind as well as in degree from what is possessed by men of relatively small means. Therefore, I believe in a graduated income tax on big fortunes, and in another tax which is far more easily collected and far more effective — a graduated inheritance tax on big fortunes, properly safeguarded against evasion and increasing rapidly in amount with the size of the estate.

Theodore Roosevelt (1858–1919) American politician, statesman, conservationist, writer, US President (1901–1909)
Speech (1910-08-31), “The New Nationalism,” John Brown Memorial Park dedication, Osawatomie, Kansas
(Source)

WIST Quotations

Newton, Isaac -- (Attributed)

Roosevelt, Theodore -- Speech (1910-08-31), “The New Nationalism,” John Brown Memorial Park dedication, Osawatomie, Kansas