Although we have to begin our metaphysical life by doubting accepted values, we cannot end there; we cannot live forever in an atmosphere of suspended judgement. The process of active living demands that sooner or later we commit ourselves to a definite, if tentative, standpoint, even without reaching absolute certainty. Doubt, therefore, is a provisional and not a permanent attitude.

-- Notebooks Category 7: The Intellect > Chapter 2: The Service of Intellect > # 124