The question is, how can this magnetism be developed? This magnetism is developed by study, by concentration, by a keen observation of life, and by the knowledge of repose. Very many intelligent persons, because they do not know how to concentrate and how to take repose in their lives, in time blunt their intelligence; because there is a certain fund of energy which is preserved and which is limited, and when there is too much pressure put upon that limited energy in the end what happens? A person becomes less and less intelligent, and his power of mind diminishes every day. Whenever you find a very intelligent man becoming duller every day, it always proves that the amount of energy that was there has been spent. It is, therefore, by knowing how to preserve one's energies by repose, and how to concentrate and sharpen one's intellect, that this magnetism remains in a right condition. What generally happens is that great responsibility falls on the intelligent person. Much more is asked of him than of others who lack intelligence. If he does not give his mind a rest by knowing how to repose, and if he does not concentrate and thus sharpen his intellect, naturally, just like a knife which is continually used, it will become blunted; naturally the continual use of intellect will make him short of words.