In the quest to understand quantum gravity, we are like children playing on the shore of a vast ocean, occasionally finding a smooth pebble or a pretty shell, while the great ocean of truth lies undiscovered before us.
The past is never dead. It's not even past.
Compliment people behind their back. It’ll come back to you.
There is only one good, which is knowledge, and one evil, which is ignorance.
Technology must ultimately serve people and improve the quality of human life.