Most wonderful when /
they scatter --- /
The cherry blossoms. /
In this floating world, /
does anything endure?
(Chireba-koso / Itodo sakura wa / Medetakere / Ukiyo ni nani ka / Hisashikarubeki}
--- from Tales of Ise, by Narihira
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31 May 2011
How to solve quadratic equations and other math mysteries
Math lessons from my sister, who's been a University Math professor since she was 19.