EN
This dissertation takes analyses of Tertullian's treatise On the Soul in aspects of beginning human life and abortion in context of ancient Greek philosopher’s opinions. The article shows arguments which Tertullian used to prove that embryo have a soul so is alive and human life begins in moment of conception so man is not only body and is not only soul but is substantial union of flesh and corporal soul. The article also presents pronounces about conception of soul from psychical semen (Tertullian as tarducianist) and about abortion which Tertullian calls crime but permits as necessary in case when bad laying child could become killer of own mother during birth.