A celebrated American author, Oliver Wendall Holmes, in one of his books makes mention of these duels of psychic force between individuals, as follows:  “There is that deadly Indian hug in which men wrestle with their eyes, over in five seconds, but which breaks one of their two backs, and is good for three-score years and ten, one trial enough—­settles the whole matter—­just as when two feathered songsters of the barnyard, game and dunghill, come together.  After a jump or two, and a few sharp kicks, there is an end to it; and it is ‘After you, monsieur’ with the beaten party in all the social relations for all the rest of his days.”

An English physician, Dr. Fothergill by name, wrote a number of years ago about this struggle of wills, as he called it, but which is really a struggle of psychic power.  He says:  “The conflict of will, the power to command others, has been spoken of frequently.  Yet what is this will-power that influences others?  What is it that makes us accept, and adopt too, the advice of one person, while precisely the same advice from another has been rejected?  Is it the weight of force of will which insensibly influences us; the force of will behind the advice?  That is what it is!  The person who thus forces his or her advice upon us has no more power to enforce it than others; but all the same we do as requested.  We accept from one what we reject from another.  One person says of something contemplated, ‘Oh, but you must not,’ yet we do it all the same, though that person may be in a position to make us regret the rejection of that counsel.  Another person says, ‘Oh, but you mustn’t,’ and we desist, though we may, if so disposed, set this latter person’s opinion at defiance with impunity.  It is not the fear of consequences, not of giving offense, which determines the adaption of the latter person’s advice, while it has been rejected when given by the first.  It depends upon the character or will-power of the individual advising whether we accept the advice or reject it.  This character often depends little, if at all, in some cases, upon the intellect, or even upon the moral qualities, the goodness or badness, of the individual.  It is itself an imponderable something; yet it carries weight with it.  There may be abler men, cleverer men; but it is the one possessed of will who rises to the surface at these times—­the one who can by some subtle power make other men obey him.

“The will-power goes on universally.  In the young aristocrat who gets his tailor to make another advance in defiance of his conviction that he will never get his money back.  It goes on between lawyer and client; betwixt doctor and patient; between banker and borrower; betwixt buyer and seller.  It is not tact which enables the person behind the counter to induce customers to buy what they did not intend to buy, and which bought, gives them no satisfaction, though it is linked therewith for the effort to be successful.  Whenever two persons meet in business,