Our knowledge can only be finite, while our ignorance must necessarily be infinite.
A Swedish botanist, naturalist and doctor who was one of the first people to try to catalogue the immense variety of life in an organised way.
An English actress and author.
An American engineer who invented the Moog synthesizer and pioneer of electronic music.
A Russian chess grandmaster and former World Champion.
American film actor and producer, noted especially for the daring athletic feats and expert swordsmanship that highlighted his performances.
In a letter, Benjamin Franklin describes his latest invention, bifocal eyeglasses; the upper portion of the lens is ground for distance and the lower part for reading.
The North-West Mounted Police (now the Royal Canadian Mounted Police) is established as Canada's national police force; officers are popularly called Mounties.
Notorious partners-in-crime Bonnie Parker and Clyde Barrow, commonly known as Bonnie and Clyde, are shot to death in a police ambush in Louisiana.

American film actor and producer, noted especially for the daring athletic feats and expert swordsmanship that highlighted his performances. He was born on 23 May, 1883, in Denver, Colorado, and educated at the Colorado School of Mines and at Harvard University. After a short period with a Wall Street brokerage firm, he turned to the stage in 1901. During the following 14 years he rose to stardom, appearing in a variety of roles. In 1915 he entered films, eventually forming his own producing company. As a star he was one of the most popular actors of his day, starring in such films as The Mark of Zorro (1920), The Three Musketeers (1921), Robin Hood (1922), The Thief of Bagdad (1924), Don Q, Son of Zorro (1925), The Black Pirate (1926), The Gaucho (1927), The Iron Mask (1929), and The Taming of the Shrew (1929). In association with his second wife (the actor Mary Pickford), the director D. W. Griffith, and the actor-director-producer Charlie Chaplin, Fairbanks founded the film-producing company United Artists, Inc., in 1919.
He died on December 12, 1939, Santa Monica, California, United States.
Author : Dr. Nidhi Jindal