Following his promotion, he became the first assistant professor of philosophy seminar under the tutelage of Frane Veber. He was interested in ethics and mental state analysis, which guided him into the field of psychology. He upgraded his knowledge with the psychologist Vittori Benussi in Padua. He also asserted himself as a Slovenian mountaineer who skillfully intertwined philosophical views with mountain climbing. By publishing contributions about his ascents, he promoted a passion for mountaineering.

Klement Jug was considered an outstanding student of philosophy, and he shifted his studies into his own beliefs. His mentor, Professor France Veber, was at first immensely impressed with his principles, although Vladimir Bartol mentioned Veber later disagreed with the stances expressed in the doctoral thesis, so he tore it apart. The doctoral thesis by Klement Jug is lost to history, it disappeared after World War II. It is now impossible for us to study his thoughts correctly and concretely.

Klement Jug directed a lot of his energy into psychology. He combined his vision of mountaineering ("touristics", as they called it then) with both philosophy and psychology. "Touristics" that he pursued meant striving for victories for him. If he decided to tackle it, he wanted to be among the first ones "until he perishes". Morally speaking, conquering a mountain is conquering oneself.

"Master your own psyche and you shall master the danger. The danger is one of the best educational tools. Where there is will, there is a way..." These are some guidelines that reveal a lot about his mindset.