Each of us lives in two realms, the "within" and the "without." The within of our lives is somehow found in the realm of ends, the without in the realm of means. The within of our [lives], the bottom — that realm of spiritual ends expressed in art, literature, morals, and religion for which at best we live. The without of our lives is that realm of instrumentalities, techniques, mechanisms by which we live. Now the great temptation of life and the great tragedy of life is that so often we allow the without of our lives to absorb the within of our lives. The great tragedy of life is that too often we allow the means by which we live to outdistance the ends for which we live.

Keep Moving From This Mountain (1965)