Man (and woman) has an infinite capacity for self-development. Equally, he has an infinite capacity for self-destruction. A human being may be clinically alive and yet, despite all appearances, spiritually dead.

But one may say something and yet not be able to do it. Try, for instance, lifting yourself up by the bootstraps.

Opinion is usually something which people have when they lack comprehensive information.

Scholars of the East and West have heroically consecrated their whole working lives to making available, by means of their own disciplines, Sufi literary and philosophical material to the world at large. In many cases they have faithfully recorded the Sufis' own reiteration that the Way of the Sufis cannot be understood by means of the intellect or by ordinary book learning.

You need not wonder whether you should have an unreliable person as a friend. An unreliable person is nobody's friend.

Learn to be as analytical about things of which you are credulous as you are of those which you criticise.

People today are in danger of drowning in information; but, because they have been taught that information is useful, they are more willing to drown than they need be. If they could handle information, they would not have to drown at all.