"Let your mind guard against an attempted invasion by all kinds

of unworthy thoughts. Never doubt its power to repel harmful

ideas. Because of daily defeats we assume that the mind is

inferior to whatever happens to us. This is a wrong assumption.

We simply lack knowledge of the mind's actual supremacy. The

needed knowledge can be won. 

So let your mind admit only the

high and the noble, just as a sea-wall permits only the higher

waves to splash over to the other side."

       Esoteric Encyclopedia of Eternal Knowledge, p. 111