Eternity, Abraham Cowley

Nothing is there to come, and nothing past,
But an eternal now does always last.

- Abraham Cowley in Davideis, Book I, line 360

http://en.wikiquote.org/wiki/Eternity

Eternity, Henry Brooks Adams

A teacher affects eternity; he can never tell, where his influence stops.

- Henry Brooks Adams, in The Education of Henry Adams (1907)

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http://en.wikiquote.org/wiki/Eternity