“It is upon the serene and placid surface of the unruffled mind that the visions gathered from the invisible find a representation in the visible world.
Otherwise, you would vainly seek those visions, those flashes of sudden light which have already helped to solve so many of the minor problems and which alone can bring the truth before the eye of the soul.
It is with jealous care that we have to guard our mind-plane from all the adverse influences which daily arise in our passage through earth-life.” (K.H. In T. Baker, editor. The Mahatma Letters to A.P. Sinnett, n. 11, p. 64; emphasis added)