Anyone who has a true understanding of Buddhism knows just how untrue what Abdu'l-Baha' said about Buddhism is. Abdu'l-Baha's knowledge of Buddhism was obviously quite limited and based on the Shiah Islamic education he received. Buddhism was never a theistic religion, Buddhists have never worshiped statues any more than Baha'is worship the Greatest Name or pictures of Abdu'l-Baha'. My thought is that all of human spiritual experience, the entire human spiritual enterprise, is legitimate: pagan, polytheistic, theistic, non-theistic; and that this spiritual enterprise transcends belief in, or disbelief in, this god or that god. For me it is not a person's professed beliefs, or disbelief's, that defines them, it is their character and the manner they treat their fellow human beings. This is the true indicator of their spirituality.
Source : TRB