Isaac Newton (1642-1727)

Isaac Newton (1642-1727)

Sir Isaac Newton (25 December 1642 – 20 March 1727 [NS: 4 January 1643 – 31 March 1727]) was an English physicist, mathematician, astronomer, natural philosopher, alchemist and theologian, who has been "considered by many to be the greatest and most influential scientist who ever lived." His monograph Philosophiæ Naturalis Principia Mathematica, published in 1687, lays the foundations for most of classical mechanics. In this work, Newton described universal gravitation and the three laws of motion, which dominated the scientific view of the physical universe for the next three centuries. Newton showed that the motions of objects on Earth and of celestial bodies are governed by the same set of natural laws, by demonstrating the consistency between Kepler's laws of planetary motion and his theory of gravitation, thus removing the last doubts about heliocentrism and advancing the Scientific Revolution.

The Principia is generally considered to be one of the most important scientific books ever written, due, independently, to the specific physical laws the work successfully described, and for the style of the work, which assisted in setting standards for scientific publication down to the present time. Newton built the first practical reflecting telescope and developed a theory of colour based on the observation that a prism decomposes white light into the many colours that form the visible spectrum. He also formulated an empirical law of cooling and studied the speed of sound. In mathematics, Newton shares the credit with Gottfried Leibniz for the development of differential and integral calculus. He also demonstrated the generalised binomial theorem, developed Newton's method for approximating the roots of a function, and contributed to the study of power series. Newton's work on infinite series was inspired by Simon Stevin's decimals.

Newton, although an unorthodox Christian, was deeply religious, and wrote more on Biblical hermeneutics and occult studies than on science and mathematics. Newton secretly rejected Trinitarianism, and feared being accused of refusing holy orders.

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Quotes·Quotations by Isaac Newton

Communication

¶ Tact is the knack of making a point without making an enemy.

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http://en.wikipedia.org/wiki/Sir_Isaac_Newton

Humphrey Bogart (1899-1957)

Humphrey Bogart (1899-1957)

Humphrey DeForest Bogart (December 25, 1899 – January 14, 1957) was an American actor. He is widely regarded as a cultural icon. The American Film Institute ranked Bogart as the greatest male star in the history of American cinema.

After trying various jobs, Bogart began acting in 1921 and became a regular in Broadway productions in the 1920s and 1930s. When the stock market crash of 1929 reduced the demand for plays, Bogart turned to film. His first great success was as Duke Mantee in The Petrified Forest (1936), and this led to a period of typecasting as a gangster with films such as Angels with Dirty Faces (1938) and B-movies like The Return of Doctor X (1939).

Bogart's breakthrough as a leading man came in 1941, with High Sierra and The Maltese Falcon. The next year, his performance in Casablanca raised him to the peak of his profession and, at the same time, cemented his trademark film persona, that of the hard-boiled cynic who ultimately shows his noble side. Other successes followed, including To Have and Have Not (1944); The Big Sleep (1946); Dark Passage (1947) and Key Largo (1948), with his wife Lauren Bacall; The Treasure of the Sierra Madre (1948); In a Lonely Place (1950); The African Queen (1951), for which he won his only Academy Award; Sabrina (1954); and The Caine Mutiny (1954). His last movie was The Harder They Fall (1956). During a film career of almost thirty years, he appeared in 75 feature films.

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Quotes·Quotation by Humphrey Bogart

Humphrey Bogart as Sam Spade from The Maltese Falcon (1941)

¶ The, uh, stuff that dreams are made of.

Humphrey Bogart as Rick Blaine from Casablanca (1942)

¶ Here's looking at you, kid.

¶ Louis, I think this is the beginning of a beautiful friendship.


¶ We'll always have Paris. We didn't have it before...we'd...we'd lost it until you came to Casablanca. We got it back last night.

¶ Of all the gin joints in all the towns in all the world, she walks into mine.

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http://en.wikipedia.org/wiki/Humphrey_Bogart