All final spiritual reference is to be the silence beyond sound. The word made flesh is the first sound. Beyond that sound is the transcendent unknown, the unknowable. It can be spoken of as the great silence, or as the void, or as the transcendent absolute.
The way to do is to be!
Without going outside,
you may know the whole world.
Without looking through the window,
you may see the ways of heaven.
The farther you go, the less you know.
Thus the sage knows without traveling ...
sees without looking ...
works without doing.