Prabhupada referring to Sir Isaac Newton

Satsvarupa Dasa Goswami: One morning, while accompanying Srila Prabhupada on his morning walk, I made another absent-minded mistake. We had driven to Venice beach with a few devotees and parked the car. As we started to walk, I suddenly said, "Oops!" and turned back to the car to get my chanting beads. I tried to open the doors, but they were locked. "What is that?" Prabhupada asked. I replied, "I left my beads in the car", "Sir Isaac Newton," Prabhupada commented and started off on his walk without me. The reference to my foolishness, spoken in an almost private language, both mortified and delighted me.