"...the significant problems and issues of life and philosophy concern the rate and mode of the conjunction of the precarious and the assured, the incomplete and the finished, the repetitious and the varying, the safe and sane and the hazardous. ...these traits, and the modes and tempos of their interaction with each other, are fundamental features of natural existence. The experience of their various consequences, according as they are relatively isolated, unhappily or happily combined, is evidence that wisdom, and hence the love of wisdom which is philosophy, is concerned with choice and administration of their proportioned union. Structure and process, substance and accident, matter and energy, permanence and flux, one and many, continuity and discreetness, order and progress, law and liberty, uniformity and growth, tradition and innovation, rational will and impelling desires, proof and discovery, the actual and the possible, are names given to various phases of their conjunction, and the issue of living depends upon the art with which these things are adjusted to each other."