Marks quotes Feynman that physics would be harder if electrons had feelings, unlike human investors.
“Richard Feynman, the great physicist, said that, physics would be much harder if electrons had feelings. We walk in the room, we turn on the light switch, the lights go on every time.”
Marks argues investing requires optimism because it involves giving money to others hoping for more later.
“By the way, I believe that there is a predisposition to be optimistic. Not pessimistic, optimistic. Why is that? Because you have to be optimistic to be an investor.”