Question analysis: The famous saying question (1) comes from the famous scientist Newton. He is a great British physicist, mathematician, astronomer, natural philosopher and an encyclopedic "all-rounder". He is the author of Mathematical Principles of Natural Philosophy, Optics, Binomial Theorem and Calculus. His main achievement in astronomy is the discovery of the law of gravity; The most important contribution in mathematics is the creation of calculus; In mechanics, Newton established a complete theoretical system of mechanics, among which the three laws of mechanics had the greatest influence on the development of modern natural science.

The famous saying in question (2) comes from the famous inventor Edison. He is a world-famous American inventor, physicist and entrepreneur. With more than 2,000 well-known and important invention patents, it is known as the "king of inventions". Among them, the durable carbon filament bulb successfully developed by 1879 has brought light to the world. He is also the first person in human history to use a large number of laboratories to conduct research on production principles and electrical engineering to engage in invention patents and have a significant and far-reaching impact on the world.

The famous saying in question (3) comes from the famous musician Beethoven. He is a German composer and musician, one of the representatives of Vienna Classical Music School, and a great musician who "epitomizes classicism and creates romanticism". His works have had a far-reaching impact on the development of music, so he is known as the "Saint of Music". His famous works include the symphonies Hero (the third symphony), Destiny (the fifth symphony), Pastoral (the sixth symphony) and Chorus (the ninth symphony).