Why “you” is a great word
The second-person pronoun used to refer to the person or people being addressed. From Middle English *you, yow*, from Old English *ēow* (dative case of *ġē* "you"), from Proto-West Germanic *iwwi, from Proto-Germanic *iwwiz* (dative case of *jīz*), from Proto-Indo-European *yúHs* ("you", plural). Unlike "thou," the singular, intimate address now fossilized in prayer and poetry, or "ye," the archaic nominative subject, "you" has subsumed them both, becoming the universal, undifferentiated vessel for another. It is the warmth of a hand brushing yours across a café table, the chill of a nurse calling your name in a sterile corridor, the silent weight of an unsent letter held too long in the palm—a testament to the profound and lonely human need to be heard by someone other than oneself.
Etymology
From Middle English you, yow, ȝow (object case of ye), from Old English ēow (“you”, dative case of ġē), from Proto-West Germanic *iwwi (“you”, dative case of *jiʀ), from Proto-Germanic *iwwiz (“you”, dative case of *jīz), the Western form of Proto-Germanic *izwiz (“you”, dative case of *jūz), from Proto-Indo-European *yúHs (“you”, plural). Cognate with Scots you (“you”), Saterland Frisian jou (“you”), West Frisian jo (“you”), Low German jo, joe and oe (“you”), Dutch jou and u (“you”), German euch (“you”), Middle High German eu, iu (“you”, object pronoun), Latin vōs (“you”), Avestan 𐬬𐬋 (vō, “you”), Ashkun yë̃ (“you”), Kamkata-viri šo (“you”), Sanskrit यूयम् (yūyám, “you”). See usage notes. Ye, you and your are cognate with Dutch jij/je, jou, jouw; Low German ji, jo/ju, jug and German ihr,