You quote a line from The Call, “All is revealed; all is attainable.” This is said in relation to the Cosmos. Indeed, the whole Cosmos is open for our perception. But the mysteries of cosmos are revealed only in complete correspondence with the consciousness and heart of the questioner; and so it is in the Teaching. Hence, always remember about the golden equilibrium between mind and heart. Without this equilibrium there is no true progress, and all mysteries remain closed and inaccessible. Therefore, let us manifest both mind and heart in all our actions.
(Elena Roerich – Letters, Vol. II, 1937)