Buddhism is a hundred times as realistic as Christianity it is part of its living heritage that it is able to face problems objectively and coolly; it is the product of long centuries of philosophical speculation.
Buddha himself taught different teachings to different people under different circumstances. For some people, there are beliefs based on a Creator. For others, no Creator. The only "definitive truth" for Buddhism is the absolute negation of any one truth as the Definitive Truth.
I think oysters are more beautiful than any religion,' he resumed presently. 'They not only forgive our unkindness to them; they justify it, they incite us to go on being perfectly horrid to them. Once they arrive at the supper-table they seem to enter thoroughly into the spirit of the thing. There's nothing in Christianity or Buddhism that quite matches the sympathetic unselfishness of an oyster.
The nature of Buddhism, as I understand it, is to believe that we are all pure and radiant at our core. And yet we see around us so much evidence that people are not acting from a place of purity and radiance.
Here's an example: someone says, "Master, please hand me the knife," and he hands them the knife, blade first. "Please give me the other end," he says. And the master replies, "What would you do with the other end?" This is answering an everyday matter in terms of the metaphysical. When the question is, "Master, what is the fundamental principle of Buddhism?" Then he replies, "There is enough breeze in this fan to keep me cool." That is answering the metaphysical in terms of the everyday, and that is, more or less, the principle zen works on. The mundane and the sacred are one and the same.