The best things in life are free.

The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.

The past is a ghost, the future a dream, and all we ever have is now.

Space is a way of existing in relation.

"Imagination is more important than knowledge."

我从不允许自己对任何事情有意见，除非我比他们更了解另一方的观点。