Plato, 427- 377 BC, is the philosopher believed that the soul operated on three levels: reason, will, and desire. According to the ancient Greek philosopher Plato the levels of the soul are:
1. the reason - the logic and the seeking for true
2. the will - the courage ti be good and to resist the appetites
3. the desire - the appetites for various pleasures, comforts and physical satisfactions
