David Brewster

Sir David Brewster (11 December 1781 – 10 February 1868) was a Scottish physicist, mathematician, astronomer, inventor, writer and university principal.

Read more about David Brewster:  Early Life, Career, Family

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    What a battle a man must fight everywhere to maintain his standing army of thoughts, and march with them in orderly array through the always hostile country! How many enemies there are to sane thinking! Every soldier has succumbed to them before he enlists for those other battles.
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