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The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.

The core of technological innovation is to solve practical problems, not to innovate for the sake of innovation.

I'm not a believer, I'm a skeptic.

In my country we go to prison first and then become President.

愛別人的，別人也必然愛他，利于別人的，別人也必然利于他，憎惡別人的，別人也必然憎惡他，殘害別人的，別人也必然殘害他。

適應是心智最偉大的成就。

Every decision we make at sea has a ripple effect on global food security.

The Moving Finger writes; and, having writ, Moves on: nor all thy Piety nor Wit Shall lure it back to cancel half a Line, Nor all thy Tears wash out a Word of it.

Every discovery in physics opens a door to a new mystery, and that is the beauty of science.