PT - JOURNAL ARTICLE AU - Stránský, Jiří TI - Who is φυσικος According to Aristotle? (De an. 403A29-B18) DP - 2015 Mar 30 TA - Aither PG - 56--69 VI - 7 IP - 1 AID - 10.5507/aither.2015.006 IS - 18037879 AB - The aim of this paper is to answer the following question: "Who, according to Aristotle, is the natural philosopher?" On the basis of a short passage from De anima (403a29-b18) it is argued that the term "natural philosopher" is used by Aristotle in two different senses: first, it applies to a ionian type of thinker who reduces his research to the material cause only, second, it applies to a thinker who does his research properly, that is, who takes into account all four aristotelian causes.