What do you think about Seyyed Hossein Nasr, University Professor of Islamic Studies at George Washington University and his opinions on Islamic doctrines of cosmology?
Praise be to Allah, the Lord of the World; and may His blessings and peace be upon our Prophet Muhammad and upon all his Family and Companions.
We do not know the person you are asking about. Know that examining Muslim's faith is not permissible. Basically, the faith of a Muslim is considered correct unless we observe something in his words or actions contradict to the Islamic faith.
Allah knows best.
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