Big Bang Theory Quote
Sheldon: In the world of theoretical physics, you never finish. So much is unprovable. But when I was studying that railway guide, it was so tangible and so satisfying that something just clicked. Then it clacked. Then it clicked and clacked, click-clack, clickety-clack and here we are! Whoo-whoo!
Quote from S10E15 - The Locomotion Reverberation