This paper seeks to examine the philosophical principles of Jainism, its ontology, karma, ethics and idea of salvation. In this religion, being is divided into two main groups: Jiva (the spirit) and Ajiva (the body), and it is based on dualism in its analysis of human psychology. Both ontological essences are pre-existent, eternal and uncreated. Jiva is divided into two "captive" and "emancipated" categories and the incomprehensible principle, or jiva, includes the five essences of matter, dharma, Adharma, space and time. In Jainism, because there is no belief in a personal God, the karma is a fundamental principle of reincarnation. Worldly things, define the essence. As regards the ethics, the point of Jainist morality is to reach nirvana, and it is based on asceticism. Therefore, the salvation in this religion is very difficult, requiring a monastic life, and is made possible through avoiding of past life karma, and new karma. In a descriptive, analytical approach, this paper will demonstrate that the important principles of Jainism are austerity and Ahymsa, and that all of its philosophical ideas are in accordance with Ahymsa.