Epiphanies
I grew up knowing what Sisu means (it's a Finnish thing) and that I can't translate it well. But Wikipedia's cross reference both fits and never really occurred to me.
http://en.wikipedia.org/wiki/Sisu#See_also
http://en.wikipedia.org/wiki/Sisu#See_also
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i hadn't known what sisu meant before, but now i have to go get it tattooed on my mother.
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You could just get her a button, she might appreciate that more.