Who can tell us about the spiritual worlds?
Only he who possesses unearthly qualities can judge the unearthly. If at the same time he possesses earthly qualities as well, then he can at least describe the unearthly to us. Such a person can only be a Kabbalist – a person of our world, created with the same qualities as each of us and at the same time given from the heavens other qualities that enable him to tell us about what is going on in that other world.