Logic is the hygiene the mathematician practices to keep his ideas healthy and strong.
Hermann WeylRead
Symmetry, as wide or as narrow as you may define its meaning, is one idea by which man through the ages has tried to comprehend and create order, beauty and perfection.
Interpretation
Symmetry reflects our quest for understanding order and beauty in life.
In this quote, Hermann Weyl emphasizes the importance of symmetry as a concept that has been pursued by humanity throughout history. He suggests that symmetry represents not only a mathematical or aesthetic ideal but also a deeper philosophical idea through which people seek to make sense of the world, aiming for harmony, balance, and perfection in their creations and understanding of nature.
In practice
In a lecture on aesthetics, you might quote this to highlight the importance of symmetry in art.
Logic is the hygiene the mathematician practices to keep his ideas healthy and strong.
Without the concepts, methods and results found and developed by previous generations right down to Greek antiquity one cannot understand either the aims or achievements of mathematics in the last 50 years. [Said in 1950]
We are not very pleased when we are forced to accept a mathematical truth by virtue of a complicated chain of formal conclusions and computations, which we traverse blindly, link by link, feeling our way by touch. We want first an overview of the aim and of the road; we want to understand the idea of the proof, the deeper context.
Besides language and music, mathematics is one of the primary manifestations of the free creative power of the human mind.
You can not apply mathematics as long as words still becloud reality.
Besides language and music, it [mathematics] is one of the primary manifestations of the free creative power of the human mind, and it is the universal organ for world understanding through theoretical construction. Mathematics must therefore remain an essential element of the knowledge and abilities which we have to teach, of the culture we have to transmit, to the next generation.
The best thing a man can do for his culture when he is rich is to endeavor to carry out those schemes which he entertained when he was poor
It is a general principle of human nature, that a man will be interested in whatever he possesses, in proportion to the firmness or precariousness of the tenure by which he holds it.
There is no getting around the reality that the second Iraq war was a war of choice; had it been carried out differently, it still would have been an expensive choice and almost certainly a bad one.
Sexist grammar burns into the brains of little girls and young women a message that the male is the norm, the standard, the central figure beside which we are all deviants, the marginal, the dependent variables. It lays the foundation for androcentric thinking, and leaves men safe in their solipsistic tunnel-vision.
I don't like to talk much with people who always agree with me. It is amusing to coquette with an echo for a little while, but one soon tires of it.
If we want to cultivate a true spirit of democracy we cannot afford to be intolerant. Intolerance betrays want of faith in one's cause.
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