My upcoming book, Redeeming Christianity, (soon to be published by Bilbo Books) contains these quotes on skepticism by Paramahansa Yogananda. Useful principles for thinking…
“There are two kinds of doubt: destructive and constructive. Destructive doubt is habitual skepticism. Men who cultivate that attitude disbelieve blindly; they shun the work of impartial investigation. Skepticism is a static on one’s mental radio that causes him to lose the program of truth.
“Constructive doubt is intelligent questioning and fair examination. Those who cultivate that attitude do not prejudge matters or accept as valid the opinions of others. In the spiritual path, constructive doubters base their conclusions on tests and personal experience: the proper approach to truth.”