Complex sentence: Schultens was the chief teacher of the Arabic language in the whole of the Europe of his time, and in some sense revived Arabic studies, but be differed from JJ Reiske and Silvestre de Sacy in regarding Arabic as a handmaid to Hebrew.
Split into simpler sentences: Schultens was the chief teacher of the Arabic language in the whole of the Europe during his lifetime. He differed from JJ Reiske and Silvestre de Sacy in regarding Arabic as a handmaid to Hebrew.