There is another form of the error which is found in the business world.  Men of affairs conceive quite irrational dislikes for certain types of securities or transactions.  They are given, perhaps, an excellent offer, out of which they might make a considerable profit.  They turn the matter down without further consideration.  Their ostensible reason is that they are not accustomed to deal in that particular class of security.  Their real reason for refusing is that they are the victims of their own environment, and that they have not the intellectual courage or force to break away from it even when every argument proves that it would be to their advantage to do so.  Their intellects have become musclebound by habit or tradition.

The fourth and, perhaps, the most violent form of prejudice, outside the sphere of religion, may be found in politics.  Men embrace certain political conceptions, and, though the whole world breaks into ruins, and is reconstructed around them, nothing will alter their original ideas.  The Radical says that the Tory does not change his spots, and the Tory is convinced that a Radical is still a direct emanation of the evil one.  In the middle of these conflicting antagonisms the real road to national peace, prosperity, and security is missed by those who prefer prejudice to the lessons which reality teaches.  The most infamous case of all to the unbending partisan is that of a man who has so far outlived the prejudices of party as to be able to criticise one side without joining another.

The advantage of prejudice is the preservation of tradition; its disadvantage is the inability which it brings to an individual or to a nation to adapt life to the change of circumstance.  It is, therefore, at once both the vice of youth and of age.  Youth is prejudiced by upbringing; age is prejudiced because it cannot adapt itself to the circumstances of a changing world.  But both youth and age can fight by the power of the human will against the tendencies which steep them in their own prepossessions.

Youth can say:  “I will forget that I was brought up to be a Scotsman and a Presbyterian, and so prejudiced against all Roman Catholics or Jews; the world is open to me, I will form my own convictions and judge men and religion on their merits.”  The subconscious self will still operate, but its extravagances will be checked by reason and will.

Age can say to itself:  “It is true that all that has happened in the past is part of my experience, and therefore of me.  I have formed certain conclusions from what I have observed, but the data on which I have formed them are constantly changing.  The moment that I cease to be able to accept and pass into my own experience new factors which my past would reject as unpleasant or untrue I have become stereotyped in prejudice and the truth of actuality is no longer in me, and when touch with the world is lost the only alternative is retirement or disaster.”