And that's the tragedy, is that you have people who have not been settled from the last hurricane, from Katrina, and let's not forget Rita.

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When I wrote to you at Glasgow (which letter I have heard was sent too late) I did not forget your former grief, but I did not allude to it, as I well knew that it was wrong in me to revive your former feelings, but I could not resist writing to you.

BBC: Charles Darwin letters reveal his emotional side

If you have peak demand, not enough supply, software can say to two million washing machines 'forget the extra rinse'.

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