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.
Who do I belong to? How come I mortgaged my being till I don't belong to myself? How come I sold my blood? And who now owns my indecisions, my hands, my private pain, my pride?
He who acts under an emotional impulse also acts. What distinguishes an emotional action from other actions is the valuation of input and output. Emotions disarrange valuations. Inflamed with passion, man sees the goal as more desirable and the price he has to pay for it as less burdensome than he would in cool deliberation.
Like the bee gathering honey from the different flowers, the wise person _x000D_ accepts the essence of the different scriptures and sees only the good in all religions.
Cursed be the verse, how well so e'er it flow, That tends to make one worthy man my foe.
I am talking about societies drained of their essence, cultures trampled underfoot, institutions undermined, lands confiscated, religions smashed, magnificent artistic creations destroyed, extraordinary possibilities wiped out.
Thus every action must be due to one or other of seven causes: chance, nature, compulsion, habit, reasoning, anger, or appetite.
Subscribe for the occasional hand-picked quote. No noise.