“Time, so to say, runs at right angles to the page at each point on the curve.”

— Joan Robinson

Source: Economic Heresies (1971), Chapter VII, The Theory of the Firm, p. 104

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Joan Robinson 46

English economist 1903–1983

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“It is not the right angle that attracts me, nor the straight line, hard and inflexible, created by man. What attracts me is the free and sensual curve — the curve that I find in the mountains of my country, in the sinuous course of its rivers, in the body of the beloved woman.”

Oscar Niemeyer (1907–2012) Brazilian architect

As quoted in Plans, Sections and Elevations : Key Buildings of the Twentieth Century (2004) by Richard Weston
Variant translations:
It is not the right angle that attracts me,
Nor the hard, inflexible straight line, man-made.
What attracts me are free and sensual curves.
The curves in my country’s mountains,
In the sinuous flow of its rivers,
In the beloved woman’s body.
As quoted in "Architect of Optimism" http://www.ft.com/cms/s/0/db740a7a-e897-11db-b2c3-000b5df10621.html?nclick_check=1, Angel Gurria-Quintana, Financial Times (2007-04-13)
It is not the right angle that attracts me.
nor the straight line, tough, inflexible,
created by man.
what attracts me is the free, sensual curve.
the curve I find in the mountains of my country,
in the sinuous course of its rivers,
in the waves of the sea,
in the clouds of the sky,
in the body of the favourite woman.
Of curves is made all the universe.
As quoted on a Photo page on the Museum of Contemporary Art over Baia da Guanabara http://app.tabblo.com/studio/stories/view/122423/?nextnav=favs&navuser=1

“The trisection of an angle was effected by means of a curve discovered by Hippias of Elis, the sophist, a contemporary of Hippocrates as well as of Democritus and Socrates. The curve was called the quadratrix because it also served (in the hands, as we are told, of Dinostratus, brother of Menæchmus, and of Nicomedes) for squaring the circle. It was theoretically constructed as the locus of the point of intersection of two straight lines moving at uniform speeds and in the same time, one motion being angular and the other rectilinear.”

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Source: The Curve of the Snowflake (1956), p. 126.

“Euclid defines the angle as an inclination of lines…he meant halflines, because otherwise he would not be able to distinguish adjacent angles from each other… Euclid does not know zero angles, nor straight and bigger than straight angles…Euclid takes the liberty of adding angles beyond two and even four right angles; the result cannot be angles according to the original definitions…Nevertheless one feels that Euclid’s angle concept is consistent.”

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“If two right lines cut one another, they will form the angles at the vertex equal….
This… is what the the present theorem evinces, that when two right lines mutually cut each other, the vertical angles are equal. And it was first invented according to Eudemus by Thales…”

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Proposition XV. Thereom VIII.
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“The goal of the Left is a government-run country and that of the Right the freedom of the individual from government. Page 236.”

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“Any segment of a right-angled conoid (i. e., a paraboloid of revolution) cut off by a plane at right angles to the axis is 1½ times the cone which has the same base and the same axis as the segment”

Archimedes book The Method of Mechanical Theorems

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“As they say in Hindi ‘Chalti ka naam zindagi.’ Anybody who is just sitting (even on the right track) will be run over (by the train) at some point in life.”

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