Natural basis of the Sophistic conception of man — an outline.
Following the tradition of the philosophy of nature, influenced by hippocratic medicine, Sophists claim that human-being is a biological creature, a part of the world of nature, subject to its rules and rights. Convinced that human-being is a composition of physical and spiritual elements and interested in the relation between the two, the Sophists examine the impact of psychological and physical stimuli on human behaviour. They take under scrutiny various human states (pathe) such as sleep, wakefulness, sickness, madness, love, hatred. They emphasize the uniqueness and "private" character of individual perceptions and states which are dependent on the particular situation of a given subject. For these reasons, as they maintain, the nature of human cognition must be "private", fragmentary and limited.