What they do not perceive is that inward contemplation is only a technique, not an end in itself. The proper end of contemplation is the attainment of a higher consciousness. That consciousness is not, as they erroneously suppose, incommensurable with outward activity. But contemplation, as a practical exercise, certainly is. Here, then, is where they confuse a method with the goal of that method. It is perfectly possible to sustain both the higher consciousness and physical and intellectual activity at the same time. The latter need not necessarily imperil the former. Mystics who complain that it does do so are really complaining that it imperils the formal practice of contemplation--which is a different matter.
-- Notebooks Category 20: What Is Philosophy? > Chapter 4: Its Realization Beyond Ecstasy > # 29