过去是你所记得的，想象你记得的，说服自己记得的，或假装记得的。
"The past is what you remember, imagine you remember, convince yourself you remember, or pretend you remember."
The only way to achieve true freedom is through self-discipline.
"The only true voyage of discovery, the only fountain of Eternal Youth, would be not to visit strange lands but to possess other eyes, to behold the universe through the eyes of another, of a hundred others, to behold the hundred universes that each of them beholds."
The brain is a complex system, and we are just beginning to understand how it works.
The joy of mathematics comes from the act of creation, not just the result.
"I am not a writer who writes to entertain. I write to provoke thought and challenge the status quo."
You can’t put a limit on anything. The more you dream, the farther you get.
Fearless is not the absence of fear. It's not being completely unafraid. Fearless is having fears. Fearless is having doubts. Lots of them. Fearless is living in spite of those things, every day.