IN: Leonardo di ser Piero da Vinci (Italian: [leo'nardo di ,ser 'pje:ro da (v)'vintSi] ( listen); 15 April 1452 - 2 May 1519), more commonly Leonardo da Vinci or simply Leonardo, was an Italian Renaissance polymath whose areas of interest included invention, painting, sculpting, architecture, science, music, mathematics, engineering, literature, anatomy, geology, astronomy, botany, writing, history, and cartography. He has been variously called the father of palaeontology, ichnology, and architecture, and is widely considered one of the greatest painters of all time. Sometimes credited with the inventions of the parachute, helicopter and tank, he epitomised the Renaissance humanist ideal.

In 1466, at the age of fourteen, Leonardo was apprenticed to the artist Andrea di Cione, known as Verrocchio, whose bottega (workshop) was "one of the finest in Florence". He apprenticed as a garzone (studio boy) to Andrea del Verrocchio, the leading Florentine painter and sculptor of his day (and would do so for 7 years). Other famous painters apprenticed or associated with the workshop include Domenico Ghirlandaio, Perugino, Botticelli, and Lorenzo di Credi. Leonardo would have been exposed to both theoretical training and a vast range of technical skills, including drafting, chemistry, metallurgy, metal working, plaster casting, leather working, mechanics and carpentry as well as the artistic skills of drawing, painting, sculpting and modelling. Much of the painted production of Verrocchio's workshop was done by his employees. According to Vasari, Leonardo collaborated with Verrocchio on his The Baptism of Christ, painting the young angel holding Jesus' robe in a manner that was so far superior to his master's that Verrocchio put down his brush and never painted again, although this is believed to be apocryphal. Close examination reveals areas that have been painted or touched-up over the tempera using the new technique of oil paint; the landscape, the rocks seen through the brown mountain stream and much of the figure of Jesus bearing witness to the hand of Leonardo. Leonardo may have been the model for two works by Verrocchio: the bronze statue of David in the Bargello and the Archangel Raphael in Tobias and the Angel. By 1472, at the age of twenty, Leonardo qualified as a master in the Guild of Saint Luke, the guild of artists and doctors of medicine, but even after his father set him up in his own workshop, his attachment to Verrocchio was such that he continued to collaborate with him. Leonardo's earliest known dated work is a drawing in pen and ink of the Arno valley, drawn on 5 August 1473.
QUESTION: What did he teach him
IN: Joseph Raymond McCarthy (November 14, 1908 - May 2, 1957) was an American politician who served as U.S. Senator from the state of Wisconsin from 1947 until his death in 1957. Beginning in 1950, McCarthy became the most visible public face of a period in the United States in which Cold War tensions fueled fears of widespread Communist subversion. He is known for alleging that numerous Communists and Soviet spies and sympathizers had infiltrated the United States federal government, universities, film industry, and elsewhere. Ultimately, the smear tactics that he used led him to be censured by the U.S. Senate.

McCarthy was born in 1908 on a farm in the Town of Grand Chute in Outagamie County, Wisconsin, the fifth of seven children. His mother, Bridget (Tierney), was from County Tipperary, Ireland. His father, Timothy McCarthy, was born in the United States of America, the son of an Irish father and a German mother. McCarthy dropped out of junior high school at age 14 to help his parents manage their farm. He entered Little Wolf High School, in Manawa, Wisconsin, when he was 20 and graduated in one year. He attended Marquette University from 1930 to 1935. McCarthy worked his way through college, studying first electrical engineering for two years, then law, and receiving an LL.B. degree in 1935 from Marquette University Law School in Milwaukee. McCarthy was admitted to the bar in 1935. While working at a law firm in Shawano, Wisconsin, he launched an unsuccessful campaign for district attorney as a Democrat in 1936. In 1939, McCarthy had better success when he ran for the nonpartisan elected post of 10th District circuit judge. (During his years as an attorney, McCarthy made money on the side by gambling.) McCarthy became the youngest circuit judge in the state's history by defeating incumbent Edgar V. Werner, who had been a judge for 24 years. In the campaign, McCarthy exaggerated Werner's age of 66, claiming that he was 73, and so allegedly too old and infirm to handle the duties of his office. Writing of Werner in Reds: McCarthyism In Twentieth-Century America, Ted Morgan wrote: "Pompous and condescending, he was disliked by lawyers. He had been reversed often by the Wisconsin Supreme Court, and he was so inefficient that he had piled up a huge backlog of cases." McCarthy's judicial career attracted some controversy because of the speed with which he dispatched many of his cases as he worked to clear the heavily backlogged docket he had inherited. Wisconsin had strict divorce laws, but when McCarthy heard divorce cases, he expedited them whenever possible, and he made the needs of children involved in contested divorces a priority. When it came to other cases argued before him, McCarthy compensated for his lack of experience as a jurist by demanding and relying heavily upon precise briefs from the contesting attorneys. The Wisconsin Supreme Court reversed a low percentage of the cases he heard, but he was also censured in 1941 for having lost evidence in a price fixing case.
QUESTION:
What did he do after that