“Hammer a piece of cold iron for a considerable time; you will unite its parts and diminish its bulk, and then it will appear heavier when put into the balance.”

— John Rey

Art. XI. A Translation of Rey's Essays on the Calcination of Metals, &c. (1822), Essay XV. Air dimishes in weight in three ways. The balance is deceitful, the means of remedying that.

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John Rey2

French chemist 1583–1645

Publilio Siro Latin writer

Maxim 262
Sentences, The Moral Sayings of Publius Syrus, a Roman Slave

“A teacher who is attempting to teach without inspiring the pupil with a desire to learn is hammering cold iron.”

Horace Mann (1796–1859) American politician

As quoted in The Eclectic Magazine Vol. VII, (January - June 1868)
Variants:
The teacher who is attempting to teach without inspiring the pupil with a desire to learn is hammering on cold iron.
As quoted in School Arts (1935) by Art Study and Teaching Periodicals, p. 91
A teacher who is attempting to teach without inspiring the pupil with a desire to learn is hammering on a cold iron.
As quoted in Making Minds Less Well Educated Than Our Own (2004) by Roger C. Schank, p. 151

“A crowd, proportionately to its size, magnifies all that in its units pertains to the emotions, and diminishes all that in them pertains to thought.”

Max Beerbohm (1872–1956) English writer

Source: Zuleika Dobson http://www.gutenberg.org/dirs/etext99/zdbsn11.txt (1911), Ch. IX

“To decrease geometrically is this, that in equal times, first the whole quantity then each of its successive remainders is diminished, always by a like proportional part.”

John Napier (1550–1617) Scottish mathematician

The Construction of the Wonderful Canon of Logarithms (1889)

“That body is heavier than another which, in an equal bulk, moves downward quicker.”

Aristotle (-384–-321 BC) Classical Greek philosopher, student of Plato and founder of Western philosophy

IV. 1. as quoted by Florian Cajori (1899)
On the Heavens

“When a work appears to be ahead of its time, it is only the time that is behind the work.”

Jean Cocteau (1889–1963) French poet, novelist, dramatist, designer, boxing manager and filmmaker

Le Coq et l’Arlequin (1918)

“It is as though a puzzle could be put together simply by shaking its pieces.”

Christian de Duve (1917–2013) Belgian biochemist, cytologist

Life Evolving : Molecules, Mind, and Meaning (2002)

“The etude is a Romantic idea. It appeared in the early nineteenth century as a new genre: a short piece in which the musical interest is derived almost entirely from a single technical problem. A mechanical difficulty directly produces the music, its charm, and its pathos. Beauty and technique are united, but the creative stimulus is the hand, with its arrangement of muscles and tendons, its idiosyncratic shape.”

Charles Rosen (1927–2012) American pianist and writer on music

Source: The Romantic Generation (1995), Ch. 6 : Chopin: Virtuosity Transformed

“And what is it to act upon others as you would that others would act upon you? It is to put yourself in the place of others. It is consideration of others as ardent as consideration of self. It is the balancing of abilities, supplementation, the social ideal.”

J. Howard Moore (1862–1916)

Source: Better-World Philosophy: A Sociological Synthesis (1899), The Social Ideal, p. 164

“Consequently, limestone when taken out of the kiln… though its bulk remains the same as before, it is found to have lost about a third of its weight owing to the boiling out of the water. Therefore, its pores being thus opened and its texture rendered loose, it readily mixes with sand, and hence the two materials cohere as they dry, unite with the rubble, and make a solid structure.”

Vitruvius book De architectura

Source: De architectura (The Ten Books On Architecture) (~ 15BC), Book II, Chapter V, Sec. 3

“Hammer a piece of cold iron for a considerable time; you will unite its parts and diminish its bulk, and then it will appear heavier when put into the balance.”

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John Rey2

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