The difficulty of right apprehension

"My words are easy to understand and to perform; but is there anyone in the world who can understand them and perform them? My words derive from a creative and universal Principle, in accord with the One Law. Men, not knowing these, understand me not. Few are they that understand me; therefore am I the more to be valued. The Wise Man weareth sack-cloth, but guardeth his jewel in his bosom."