缺乏多样性的森林就像只有一本书的图书馆。
A forest without diversity is like a library with only one book.
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.
Whatever you're meant to do, do it now. The conditions are always impossible.
The future belongs to those who believe in the beauty of their dreams.