Quadratic reciprocity is the song of love in the land of prime numbers. Votes: 2

I am a great fan of science, but I cannot do a quadratic equation. Votes: 2

I've said it before: equations are the devil's sentences. The worst one is that quadratic equation, an infernal salad of numbers, letters, and symbols. Votes: 2

It can be argued that the mathematics behind these images [of the orbit diagram for quadratic functions and the Mandelbrot set] is even prettier than the pictures themselves. Votes: 2

Not a lot of people know this, but I'm very good at mathematics. When I was an angry teenager, I used to sit in my room and do quadratic equations to calm myself down. Votes: 2

All over China, parents tell their children to stop complaining and to finish their quadratic equations and trigonometric functions because there are sixty-five million American kids going to bed with no math at all. Votes: 2

Aspiring to these wide generalizations, the analysis of quadratic functions soars to a pitch from whence it may look proudly down on the feeble and vain attempts of geometry proper to rise to its level or to emulate it in its flights. Votes: 2

Life is not an orderly progression, self-contained like a musical scale or a quadratic equation... If one is to record one's life truthfully, one must aim at getting into the record of it something of the disorderly discontinuity which makes it so absurd, unpredictable, bearable. Votes: 2

This specter of the female politician, who abandons her family to neglect for the sake of passing bills in parliament, is just as complete an illusion of the masculine brain, as the other specter whom Sydney Smith laid by a joke,--the woman who would forsake an infant for a quadratic equation. Votes: 2

I think it is said that Gauss had ten different proofs for the law of quadratic reciprocity. Any good theorem should have several proofs, the more the better. For two reasons: usually, different proofs have different strengths and weaknesses, and they generalise in different directions - they are not just repetitions of each other. Votes: 2

...the science of calculation also is indispensable as far as the extraction of the square and cube roots: Algebra as far as the quadratic equation and the use of logarithms are often of value in ordinary cases: but all beyond these is but a luxury; a delicious luxury indeed; but not be in indulged in by one who is to have a profession to follow for his subsistence. Votes: 2