[Mesorah] L'Sakkein Olam

[Richard]

FYI:

«Aleinu today includes the phrase "le-taqen olam" (=to fix the world), most likely the original text had "le-taken olam" (a kaf, not a quf). The original meaning was thus: to establish a world under the kingdom of God. Therefore, Aleinu originally had nothing to do with tiqqun olam (fixing the world). 

One can see the "kaf" reading in the text of R. Saadiah Gaon, and in fragments from the Cairo Genizah.[27]»

Aleinu - Wikipedia, the free encyclopedia

http://en.m.wikipedia.org/wiki/Aleinu

There is also a Hakirah article in PDF format with more information.
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אמר ריש לקיש קשוט עצמך ואחר כך קשוט אחרים
בבא מציעא דף קז,ב
בבא בתרא דף ס,ב
Shalom, RRW