Prof. Dr. Hayri ¿afak Ural graduated with a degree in Philosophy from Ankara University in 1971. After completing his studies, he continued his academic career at Istanbul University where he worked in the Department of Systematic Philosophy. In 1978 he received his doctorate for his thesis, "An Essay on the Determination of the Simplicity Principle in Positive Science". Since finishing his doctoral thesis, Ural has worked as a visiting professor in Austria (Vienna and Innsbruck), the USA (Rutgers), Hungary (Budapest) and various universities in Istanbul. Attending many international conferences in the USA, Brazil, India and Singapore has allowed Ural to further develop his theses on solipsism. He is the founder of the Department of Logics at Istanbul University and the Turkish Logic Society. He is also responsible for organizing several international conferences at Istanbul University.