The paper deals with the Socratic ethics as developed by Antisthenes and conceived by the doxografical tradition as the basis of Diogenes' Cynicism. The author tries to show that Antisthenes' thought as a whole is connected with paideia (education). Thus Antisthenes' interpretations of Homer as well as his logical paradoxes have ethical aiming. There is a close connection between Antisthenes' logic and his ethics of the care of the self. Socratic thought in Antisthenes' fragments is neither sceptical nor dialectical. Contrary to both 'intellectualistic' tendencies Antisthenes puts stress on the wise continually practicing ethics. By using of logical paradoxes (mainly ouk estin antilegein) Antisthenes probably hoped to demonstrate the anti-Platonic priority of ethics over metaphysics and logic. From this point of view Antisthenes can be seen as the predecessor of practical Cynical bios (way of life).