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To speak is to risk, but to be silent is to risk more.

The power of poetry is in its simplicity and depth.

Every mental state is a link in the chain of consciousness.

除非把愛國主義從人類中剔除，否則世界永遠不會安寧。

——1912年在舊金山麗蟬戲院的演說

正義意味著關心自己的事情，而不是干預別人的事務。

To see a world in a grain of sand, and a heaven in a wild flower, hold infinity in the palm of your hand, and eternity in an hour.

In the quest for understanding the cosmos, every question answered leads to a dozen more.