According to Osho, Einstein was more of a Brahmin than those by birth or ritual because of his humility and honesty; yet he was not a complete Brahmin. A true Brahmin is one who experientially realizes Brahman within and the oneness of inner and outer. Einstein mastered the outer cosmos but admitted ignorance of the inner, thus falling short of that realization.
Being a real Brahmin means directly feeling the One inside you; Einstein was humble and brilliant about the outside, but he didn’t discover the inside.