If the topic be highly abstract, show its nature by concrete examples. If it be unfamiliar, trace some point of analogy in it with the known. If it be inhuman, make it figure as part of a story. If it be difficult, couple its acquisition with some prospect of personal gain. Above all things, make sure that it shall run through certain inner changes, since no unvarying object can possibly hold the mental field for long.

The greatest revolution of our generation is the discovery that human beings, by changing the inner attitudes of their minds, can change the outer aspects of their lives.

Most men's friendships are too inarticulate.

Man, biologically considered ... is simply the most formidable of all beasts of prey, and, indeed, the only one that preys systematically on its own kind.

Just for today I will exercise my soul in three ways: I will do somebody a good turn and not get found out. I will do at least two things I don't want to do

The mind of your own enemy, the pupil, is working away from you, as keenly and eagerly as is the mind of the commander on the other side from the scientific general. Just what the respective enemies want and think, and what they know or do not know, are as hard things for the teachers as for the general to find out.

There must always be a discrepncy between concepts and reality, because the former are static and discontinuous while the latter is dynamic and flowing