"To follow knowledge like a sinking star"

“If I can’t build it, I don’t understand it.” —Feynman “If I can’t build it, I don’t understand it.” —Feynman “If I can’t build it, I don’t understand it.” —Feynman “If I can’t build it, I don’t understand it.” —Feynman “If I can’t build it, I don’t understand it.” —Feynman “If I can’t build it, I don’t understand it.” —Feynman “If I can’t build it, I don’t understand it.” —Feynman “If I can’t build it, I don’t understand it.” —Feynman