Titu Liviu Maiorescu (Romanian: ['titu majo'resku]; 15 February 1840 - 18 June 1917) was a Romanian literary critic and politician, founder of the Junimea Society. As a literary critic, he was instrumental in the development of Romanian culture in the second half of the 19th century. A member of the Conservative Party, he was Foreign Minister between 1910 and 1914 and Prime Minister of Romania from 1912 to 1913. He represented Romania at the Peace Conference in Bucharest that ended the Second Balkan War.

He was very eager to obtain his university (after only one year of studies in Berlin he obtained his PhD at Giessen with magna cum laude, then after a year, he got his license at the Philology and Philosophy University of Sorbona and one year later, after he studied at the University of Paris, he took his license in Law), but his eagerness did not affect his demureness in his studies; the foundations of Maiorescu's extremely solid culture were established during that period.  On 3 January 1857, he sent an essay signed with the name Aureliu to the Transylvania Gazette in order to publish some of his translations from Jean Paul's works. In the following number he intended to publish the translation of a short story written by Jean Paul and entitled "New Year's Eve Night". Although the translation was not published at that date, the letter that Aurel A. Muresianu edited later in the Gazette of books, no 1, in 1934 is still considered the first publishing attempt of T. Maiorescu and it was republished under the same title. In 1858, beside his academic activity, he worked as a teacher of psychology in private boarding schools and as a French teacher in the house of legal counselor Georg Kremnitz.  As a preparatory for French language for the Kremnitz family, Titu Maiorescu taught the four children of the family: Klara (his future wife), Helene, Wilhelm (future Dr. W. Kremnitz, Mite Kremnitz's husband, born Bardeleben) and Hermann. Titu Maiorescu got his PhD in Philosophy at Giessen with magna cum laude. The Giessen University considered, in order to allow him to get a PhD, that the last two years at Theresianum were university studies. When he returned to Romania, he published the article "The Measure of Height through a Barometer" in the review Isis or Nature.

Using a quote from the above article, answer the following question: What university did he attend?
Giessen