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Jonas Edward Salk (; October 28, 1914 - June 23, 1995) was an American medical researcher and virologist. He discovered and developed one of the first successful polio vaccines. Born in New York City, he attended New York University School of Medicine, later choosing to do medical research instead of becoming a practicing physician. In 1939, after earning his medical degree, Salk began an internship as a physician scientist at Mount Sinai Hospital.
After City College, Salk enrolled in New York University to study medicine. According to Oshinsky, NYU based its modest reputation on famous alumni, such as Walter Reed, who helped conquer yellow fever. Tuition was "comparatively low, better still, it did not discriminate against Jews, ... while most of the surrounding medical schools--Cornell, Columbia, University of Pennsylvania, and Yale--had rigid quotas in place." Yale, for example, accepted 76 applicants, in 1935, out of a pool of 501. Although 200 of the applicants were Jewish, only five got in. During his years at New York University Medical School, Salk worked as a laboratory technician during the school year and as a camp counselor in the summer.  During Salk's medical studies, he stood out from his peers, according to Bookchin, "not just because of his continued academic prowess--he was Alpha Omega Alpha, the Phi Beta Kappa Society of medical education--but because he had decided he did not want to practice medicine." Instead, he became absorbed in research, even taking a year off to study biochemistry. He later focused more of his studies on bacteriology which had replaced medicine as his primary interest. He said his desire was to help humankind in general rather than single patients. "It was the laboratory work, in particular, that gave new direction to his life."  According to Salk: "My intention was to go to medical school, and then become a medical scientist. I did not intend to practice medicine, although in medical school, and in my internship, I did all the things that were necessary to qualify me in that regard. I had opportunities along the way to drop the idea of medicine and go into science. At one point at the end of my first year of medical school, I received an opportunity to spend a year in research and teaching in biochemistry, which I did. And at the end of that year, I was told that I could, if I wished, switch and get a Ph.D. in biochemistry, but my preference was to stay with medicine. And, I believe that this is all linked to my original ambition, or desire, which was to be of some help to humankind, so to speak, in a larger sense than just on a one-to-one basis."  Concerning his last year of medical school Salk says: "I had an opportunity to spend time in elective periods in my last year in medical school, in a laboratory that was involved in studies on influenza. The influenza virus had just been discovered about a few years before that. And, I saw the opportunity at that time to test the question as to whether we could destroy the virus infectivity and still immunize. And so, by carefully designed experiments, we found it was possible to do so."

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"My intention was to go to medical school, and then become a medical scientist. I did not intend to practice medicine,



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Harry S. Truman (May 8, 1884 - December 26, 1972) was an American statesman who served as the 33rd President of the United States (1945-1953), taking the office upon the death of Franklin D. Roosevelt. A World War I veteran, he assumed the presidency during the waning months of World War II and the beginning of the Cold War. He is known for implementing the Marshall Plan to rebuild the economy of Western Europe, for the establishment of the Truman Doctrine and NATO against Soviet and Chinese Communism, and for intervening in the Korean War. In domestic affairs, he was a moderate Democrat whose liberal proposals were a continuation of Franklin Roosevelt's New Deal, but the conservative-dominated Congress blocked most of them.
The escalation of the Cold War was highlighted by Truman's approval of NSC 68, a secret statement of foreign policy. It called for tripling the defense budget, and the globalization and militarization of containment policy whereby the U.S. and its NATO allies would respond militarily to actual Soviet expansion. The document was drafted by Paul Nitze, who consulted State and Defense officials; it was formally approved by President Truman as official national strategy after the war began in Korea. It called for partial mobilization of the U.S. economy to build armaments faster than the Soviets. The plan called for strengthening Europe, weakening the Soviet Union, and building up the U.S. both militarily and economically.  Early in Truman's second term, his former Secretary of Defense Forrestal died soon after retiring. Forrestal had become exhausted through years of hard labor during and after the war, and had begun to suffer depression. He retired in March 1949; soon after, he was hospitalized but committed suicide in May.  Truman was a strong supporter of the North Atlantic Treaty Organization (NATO), which established a formal peacetime military alliance with Canada and democratic European nations that had not fallen under Soviet control following World War II. The treaty establishing it was widely popular and easily passed the Senate in 1949; Truman appointed General Eisenhower as commander. NATO's goals were to contain Soviet expansion in Europe and to send a clear message to communist leaders that the world's democracies were willing and able to build new security structures in support of democratic ideals. The U.S., Britain, France, Italy, the Netherlands, Belgium, Luxembourg, Norway, Denmark, Portugal, Iceland, and Canada were the original treaty signatories. The alliance resulted in the Soviets establishing a similar alliance, called the Warsaw Pact.  General Marshall was Truman's principal adviser on foreign policy matters, influencing such decisions as the U.S. choice against offering direct military aid to Chiang Kai-shek and his Nationalist Chinese forces in the Chinese Civil War against their communist opponents. Marshall's opinion was contrary to the counsel of almost all of Truman's other advisers--Marshall thought propping up Chiang's forces would drain U.S. resources that were needed in Europe to deter the Soviets. When the communists took control of the mainland, establishing the People's Republic of China and driving the Nationalists to Taiwan, Truman would have been willing to maintain some relationship between the U.S. and the new government but Mao was unwilling. On June 27, 1950, after the outbreak of fighting in Korea, Truman ordered the U.S. Navy's Seventh Fleet into the Taiwan Strait to prevent further conflict between the communist government on the China mainland and the Republic of China (ROC) on Taiwan.

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Truman was a strong supporter of the North Atlantic Treaty Organization (NATO