formity ceases to be a good when it becomes uniformity of oppression. The social interest served by symmetry or certainty must then be balanced against the social interest served by equity and fairness or other elements of social welfare. These may enjoin upon the judge the duty of drawing the line at another angle, of staking the path along new courses, of marking a new point of departure from which others who come after him will set out upon their journey.
If you ask how he is to know when one interest outweighs another, I can only answer that he must get his knowledge just as the legislator gets it, from experience and study and reflection; in brief, from life itself. Here, indeed, is the point of contact between the legislator's work and his. The choice of methods, the appraisement of values, must in the end be guided by like considerations for the one as for the other. Each indeed is legislating within the limits of his competence. No doubt the limits for the judge are narrower. He legislates only between gaps. He fills the open spaces in the law. How far he
