Jnana and darshana are two components of the cognition process. Knowledge, which is seen as a structural distortion in the soul, relates to the cognition of external objects. The cognition efficiency depends on the ksayopashama level of the perception mohaniya karma and antaraya karma. Knowledge is coloured by perception mohaniya karma and conduct mohaniya karma before it becomes a part of the memory bank, ajnana. The model of the cognition system that has been presented here helps to conceptualize the (virtual) structure of the soul, identify the effects of different psychical karmas on the cognition process and activities of the soul, and define terms like manah, buddhi, ahamkara, bhava and citta.