“The reason is not to glorify "bit chasing"; a more fundamental issue is at stake here: Numerical subroutines should deliver results that satisfy simple, useful mathematical laws whenever possible. […] Without any underlying symmetry properties, the job of proving interesting results becomes extremely unpleasant. The enjoyment of one's tools is an essential ingredient of successful work.”

— Donald Ervin Knuth , book The Art of Computer Programming

Vol. II, Seminumerical Algorithms, Section 4.2.2 part A, final paragraph [Italics in source]
The Art of Computer Programming (1968–2011)

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Donald Ervin Knuth 32

American computer scientist 1938

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“The reason is not to glorify "bit chasing"; a more fundamental issue is at stake here: Numerical subroutines should deliver results that satisfy simple, useful mathematical laws whenever possible.”

Donald Ervin Knuth book The Art of Computer Programming

[...] Without any underlying symmetry properties, the job of proving interesting results becomes extremely unpleasant. The enjoyment of one's tools is an essential ingredient of successful work.
Vol. II, Seminumerical Algorithms, Section 4.2.2 part A, final paragraph [Italics in source]
The Art of Computer Programming (1968–2011)

“But any people or part of a people who resort to this remedy, stake their lives, their property, and every claim for protection given by citizenship — on the issue. Victory, or the conditions imposed by the conqueror — must be the result.”

Ulysses S. Grant (1822–1885) 18th President of the United States

Source: 1880s, Personal Memoirs of General U. S. Grant (1885), Ch. 16.
Context: The right of revolution is an inherent one. When people are oppressed by their government, it is a natural right they enjoy to relieve themselves of the oppression, if they are strong enough, either by withdrawal from it, or by overthrowing it and substituting a government more acceptable. But any people or part of a people who resort to this remedy, stake their lives, their property, and every claim for protection given by citizenship — on the issue. Victory, or the conditions imposed by the conqueror — must be the result.

“Physicists describe the two properties of physical laws—that they do not depend on when or where you use them—as symmetries of nature. By this usage physicists mean that nature treats every moment in time and every location in space identically—symmetrically—by ensuring that the same fundamental laws are in operation. Much in the same manner that they affect art and music, such symmetries are deeply satisfying; they highlight an order and coherence in the workings of nature. The elegance of rich, complex, and diverse phenomena emerging from a simple set of universal laws is at least part of what physicists mean when they invoke the term "beautiful."”

Brian Greene book The Elegant Universe

The Elegant Universe (1999) Ch. 7 The "Super" in Superstrings.

“It is in the best interest of a man to become a Karma-Yogi and work to the best of his abilities and without bothering about the results.”

Vyasa central and revered figure in most Hindu traditions

Sources, Veda Vyasa Maharshi

“The result of the mathematician's creative work is demonstrative reasoning, a proof; but the proof is discovered by plausible reasoning, by guessing. If the learning of mathematics reflects to any degree the invention of mathematics, it must have a place for guessing, for plausible inference.”

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“One is happy as a result of one's own efforts, once one knows the necessary ingredients of happiness — simple tastes, a certain degree of courage, self denial to a point, love of work, and, above all, a clear conscience.”

George Sand (1804–1876) French novelist and memoirist; pseudonym of Lucile Aurore Dupin

On est heureux par soi-même quand on sait s'y prendre, avoir des goûts simples, un certain courage, une certaine abnégation, l'amour du travail et avant tout une bonne conscience.
Letter to Charles Poney, (16 November 1866), published in Georges Lubin (ed.) Correspondance (Paris: Garnier Freres, 1964-95) vol. 20, p. 188; André Maurois (trans. Gerard Hopkins) Lélia: The Life of George Sand (New York: Harper, 1954) p. 418
Variant: One is happy once one knows the necessary ingredients of happiness: simple tastes, a certain degree of courage, self denial to a point, love of work, and above all, a clear conscience.
Source: Correspondance, 1812-1876, Volume 5