I have hardly ever known a mathematician who was capable of reasoning.

As it is$$$ the lover of inquiry must follow his beloved wherever it may lead him.

Knowledge unqualified is knowledge simply of something learned.

Every heart sings a song$$$ incomplete$$$ until another heart whispers back.

No day is safe from news of you.

I know pretty much what I like and dislike; but please$$$ don't ask me who I am.

What is my life for and what am I going to do with it? I don't know and I'm afraid. I can never read all the books I want; I can never be all the people I want and live all the lives I want.

I thought the most beautiful thing in the world must be shadow.

How frail the human heart must be—a mirrored pool of thought.

I wonder why I don't go to bed and go to sleep. But then it would be tomorrow$$$ so I decide that no matter how tired$$$ no matter how incoherent I am$$$ I can skip on hour more of sleep and live.