You can never step twice into the same river is the idea of ( ).
A. Pythagoras.
B. Diogenes.
C. Heraclitus.
D. Epicurus
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In the west, the famous philosopher who is the teacher of Aristotle and student of Socrates is ( ).
Alexander.
B. Diogenes.
C. Plato
D. Heraclitus
Socrates and ( ) believe that there is a close connection between knowledge and virtue.
A. Pythagoras
B. Plato
C. Aristotle
D. Alexander
The Republic is the work of ( ).
A. Socrates
B. Plato
C. Aristotle
Diogenes
( ) preached the doctrine of the golden mean.
A. Socrates
B. Plato
C. Aristotle
Diogenes