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It is true that the guru himself is subject to the same rule of silence with regard to what concerns him personally. In Nature everything is in movement; thus, whatever does not move forward is bound to fall back. The guru must progress even as his disciples do, although his progress may not be on the same plane. And for him too, to speak about his experiences is not favourable: the greater part of the dynamic force for progress contained in the experience evaporates if it is put into words. But on the other hand, by explaining his experiences to his disciples, he greatly helps their understanding and consequently their progress. It is for him in his wisdom to know to what extent he can and ought to sacrifice the one to the other. It goes without saying that no boasting or vainglory should enter into his account, for the slightest vanity would make him no longer a guru but an imposter. <ref>http://incarnateword.in/cwm/12/the-four-austerities-and-the-four-liberations#p60</ref>

The only cure for insomnia is to get rid of the need for sleep by knowing how to obtain mental silence at will. When you can obtain silence at will, you must put your body into a position of absolute repose, stretched out comfortably on the bed; then you go within yourself until there is perfect mental silence and enter a state that is something like a very deep sleep. <ref>http://incarnateword.in/cwm/17/30-may-1966#p3</ref>