The moment you doubt whether you can fly, you cease for ever to be able to do it.

〈党员须宣传革命主义〉，在梧州对国民党员的演说，1921年10月29日至11月15日间

The ability to be alone is the ability to love. It may look paradoxical to you, but it's not. It is an existential truth: only those who can be alone are able to love, to share, to go into the deepest core of another human being—without possessing the other, without becoming dependent on the other, without reducing the other to a thing, and without becoming addicted to the other.