winning several Toy of the Year awards, and becoming a staple of 1980s popular culture. To date, over 350 million Rubik's Cubes have been sold, making it one of the best selling toys of all time. It became very famous and today, there are many sizes from 2x2 to 21x21. Other inventions In addition to Rubik's Cube, Rubik is also the inventor of Rubik's Magic, Rubik's Snake and Rubik's 360 among others. Later career and other works In the early 1980s, he became the editor of a game and puzzle journal called ..És játék (...And games), then became self-employed in 1983, founding the Rubik Stúdió, where he designed furniture and games. In 1987 he became a professor with full tenure; in 1990 he became the president of the Hungarian Engineering Academy (Magyar Mérnöki Akadémia). At the academy, he created the International Rubik Foundation to support especially talented young engineers and industrial designers. He attended the 2007 World Championship in Budapest. He also gave a lecture and autograph session at the "Bridges-Pecs" conference ("Bridges between Mathematics and the Arts") in July 2010. In 2009, he was appointed as an honorary professor of Keimyung University, Daegu, South Korea. In the 2010s, Rubik has recently spent much of his time working on Beyond Rubik's Cube, a Science, Technology, Engineering, Mathematics (STEM fields) based exhibition, which would travel the globe over the next six years. The grand opening of the exhibit was held on 26 April 2014 at the Liberty Science Center in New Jersey. At the exhibition, Rubik gave several lectures, tours, and engaged with the public and several members of the speedcubing crowd in attendance, including Anthony Michael Brooks, a world-class speedcuber. Rubik is a member of the USA Science and Engineering Festival's advisory board. Influences Ernő Rubik has listed several individuals who, as he has said, "exerted a great influence over me through their work." These include Leonardo da Vinci, whom Rubik regards as the Renaissance man; Michelangelo, whom he respects as a polymath, painter, and sculptor; and artist M. C. Escher, who drew impossible constructions and grappled with explorations of infinity. As regards to philosophers and writers, Rubik admires Voltaire, Stendhal, Thomas Mann, Jean-Paul Sartre, Hungarian poet Attila József, Jules Verne, and Isaac Asimov. In the field of architecture, Rubik is an admirer of Frank Lloyd Wright and Le Corbusier. Personal life Rubik admits to being a lifelong bibliophile and