theory

A Quote by Jules Henri Poincaré on debate, disease, generations, mathematics, and theory

Later generations will regard Mengenlehre (set theory) as a disease from which one has recovered. [Whether or not he actually said this is a matter of debate amongst historians of mathematics.]

Jules Henri Poincare (1854 - 1912)

Source: The Mathematical Intelligencer, vol 13, no. 1, Winter 1991.

Contributed by: Zaady

A Quote by John Wilmot on children and theory

Before I got married I had six theories about bringing up children; now I have six children, and no theories.

John Wilmot (1647 - 1680)

Contributed by: Zaady

A Quote by John William Gardner on acceptance, education, excellence, good, graduation, honor, humility, incompetence, justice, learning, philosophy, schools, society, theory, and water

The most important moral of all is that excellence is where you find it. I would extend this generalization to cover not just higher education but all education from vocational high school to graduate school. We must learn to honor excellence, indeed to demand it in every socially accepted human activity, however humble that activity, and to scorn shoddiness, however exalted the activity. An excellent plumber is infinitely more admirable than an incompetent philosopher. The society which scorns excellence in plumbing because plumbing is a humble activity and tolerates shoddiness in philosophy because philosophy is an exalted activity will have neither good plumbing nor good philosophy. Neither its pipes nor its theories will hold water.

John William Gardner (1912 -)

Contributed by: Zaady

A Quote by John William Gardner on excellence, good, humility, philosophy, society, theory, and water

Can We Be Equal And Excellent Too? The society which scorns excellence in plumbing because plumbing is a humble activity and tolerates shoddiness in philosophy because it is an exalted activity will have neither good plumbing nor good philosophy. Neither its pipes nor its theories will hold water.

John William Gardner (1912 -)

Source: Excellence.

Contributed by: Zaady

A Quote by John Jay on belief, colors, country, democracy, discrimination, individuality, injustice, justice, mankind, people, politics, popularity, purity, theory, time, and wishes

As to the position that "the people always mean well," that they always mean to say and do what they believe to be right and just - it may be popular, but it can not be true. The word people applies to all the individual inhabitants of a country. . . . That portion of them who individually mean well never was, nor until the millennium will be, considerable. Pure democracy, like pure rum, easily produces intoxication and with it a thousand pranks and fooleries. I do not expect mankind will, before the millennium, be what they ought to be and therefore, in my opinion, every political theory which does not regard them as being what they are, will prove abortive. Yet I wish to see all unjust and unnecessary discriminations everywhere abolished, and that the time may come when all our inhabitants of every color and discrimination shall be free and equal partakers of our political liberties.

John Jay (1745 - 1829)

Contributed by: Zaady

A Quote by John Burdon Sanderson Haldane on adoption, change, concern, facts, judgment, kindness, laws, lies, painting, poetry, science, simplicity, theory, thought, and world

In scientific thought we adopt the simplest theory which will explain all the facts under consideration and enable us to predict new facts of the same kind. The catch in this criterion lies in the world "simplest." It is really an aesthetic canon such as we find implicit in our criticisms of poetry or painting. The layman finds such a law as dx/dt = K(d^2x/dy^2) much less simple than "it oozes," of which it is the mathematical statement. The physicist reverses this judgment, and his statement is certainly the more fruitful of the two, so far as prediction is concerned. It is, however, a statement about something very unfamiliar to the plain man, namely, the rate of change of a rate of change.

John Burdon Sanderson Haldane (1892 - 1964)

Source: Possible Worlds, 1927.

Contributed by: Zaady

A Quote by Johann Wolfgang Von Goethe on friendship, life, and theory

Dear friend, all theory is gray,  And green the golden tree of life.

Johann Wolfgang von Goethe (1749 - 1832)

Source: Faust

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A Quote by Johann Wolfgang Von Goethe on friendship, life, and theory

All theory, dear friend, is grey, but the golden tree of actual life springs ever green.

Johann Wolfgang von Goethe (1749 - 1832)

Contributed by: Zaady

A Quote by J.J. Sylvester on laws, purity, and theory

[on graph theory...] The theory of ramification is one of pure colligation, for it takes no account of magnitude or position; geometrical lines are used, but these have no more real bearing on the matter than those employed in genealogical tables have in explaining the laws of procreation.

J.J. Sylvester (1814 - 1897)

Source: H. Eves Mathematical Circles Adieu, Boston: Prindle, Weber and Schmidt, 1977.

Contributed by: Zaady

A Quote by Jawaharlal Nehru on reality and theory

A theory must be tempered with reality.

Jawaharlal Nehru (1889 - 1964)

Contributed by: Zaady

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