Rarely do we realize that a blessing needs a vessel. If we stop to think about what the Talmud tells us, we should first understand that a blessing is a general form of grace that life or the Eternal One (depending on the language we feel most comfortable with) brings us. In order to perceive this grace, we must have special means of keeping it close. This is because a blessing is fluid. Grace in itself can be concrete and real, but its perception — the blessing — is fluid.
— Nilton Bonder, The Kabbalah of Envy