Einstein's theory of relativity was one of the great revolutions of 20th-century thought, and arguably the greatest theoretical construct of the human mind.

爱因斯坦的相对论是20世纪最为重大的理论变革之一，也可以说是人类思想的最伟大的理论构想。

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My read on history is that the great economic revolutions occur when two phenomena come together.

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It is entirely appropriate to remember a great, no-nonsense Englishman, the Lord Protector Cromwell, instituted the Commonwealth of Great Britain long before the French or American revolutions, and he showed us a model without that Greco-Roman name of republic.

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His one-and-a-half revolutions of the stormy southern ocean, before at last dropping anchor in Tahiti, is one of the great feats of singlehanded sailing.

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