Heather

“I had to nurture those doubts as if they were tiny, sickly kittens, until eventually they became sturdy, healthy grievances, with their own cat doors, which allowed them to wander in and out of our conversation at will.”
― Nick Hornby, High Fidelity

“Doubt is an uncomfortable condition, but certainty is a ridiculous one.”
― Voltaire

“Every mental act is composed of doubt and belief,
but it is belief that is the positive, it is belief
that sustains thought and holds the world together.”
― Søren Kierkegaard

“If you would be a real seeker after truth, it is necessary that at least once in your life you doubt, as far as possible, all things.”
― René Descartes