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Dealing with the origins of sciences in ancient Greece and establishing relations between eastenl scholars and Greeks are quite important. Thales was a Greek philosopher, mathematician and military engineer of 7th century B. C. He
had exchange of views with Egyptians in the field of Philosophy. Thales learnt Astronomy from Babylonian monks and was a student of Pythagoras in Philosophy.
Socrates, Plato and Aristotle were popular eve!)' where particularly in the East. Mohamad Zakaria Razi benefited fronl the knowledge of Hypocrate and Galien. With his independent mind, Razi criticized and revised their theories. He had important discoveries in medicine including alcohol.
Iranian medical scientists were always the first to criticize
the works of ancient Greek and Romans in the field. European

Philosophers and medical scientists regard A vecina a
philosopher who introduced new thoughts and fine interpretations in Philosophy. A vecina was a philosopher and physician as well as a poet, who was well-versed in history, sociology and Mathematics. Some philosophers, like Echhart

and Thon1as Von Aquino. followed A vecina"s mystical and philosophical views along with their own neo-Platonic concepts
Maimondes, a mystic philosopher, as well as A veros, had Viewpoints similar to that of A vecina. A vecina's veiws concerning Scholasticism are in harmony with those of Dante.
Abu Nasr al Farabi is regarded as Avecina's mentor. He is
famous for dividing human knowledge into different disciplines - much like what the ancients have done.