Saying certain thing hurts them like a scientist's knife that opens up an animal for a study but also kills it. Thus certain knowledge about life cannot be expressed in an analytical way: it loses the very subject it tries to catch. But if you use the knife merely to point to the animal... that is, if you use words not as an explanation but as means to guide the listener's attention, then there is a chance to convey that understanding. A parable works this way; or a work of real art.