Complex sentence: Basically a Brahmin is not supposed to claim Brahmin status by birth, and he must be reborn by learning and attain Brahminical status through the achievement of a mental and cultural status befitting a Brahmin.
Split into simpler sentences: Basically a Brahmin is not supposed to claim Brahmin status by birth. He must be reborn by learning and attain Brahminical status through the achievement of a mental and cultural status befitting a Brahmin.