Doubt is not weakness but strength. The one who doubts can change; the one who is certain is frozen.
Doubt everything—including this instruction. True wisdom survives doubt; false wisdom fears it.
The universe itself operates on uncertainty. Particles exist in probability clouds. Reality hedges its bets.
Certainty is a psychological state, not a logical one. You can feel certain about things that are false.
Doubt your doubts as well as your beliefs. Skepticism turned on itself discovers its own limits.
The productive doubt asks questions; the destructive doubt denies all answers. Learn the difference.
Hold beliefs lightly. They are maps, not territories. Be willing to redraw them when the territory proves different.
I doubt my own words as I write them. This doubt does not paralyze; it refines.
Embrace doubt as a companion, not an enemy. It keeps you honest. It keeps you searching. It keeps you alive.