By obormottel
The existence in Gan Eden was one where there was no desire at all to look upon דבר שאינו שלו, anything else besides what one is supposed to have. And it is in this sense that Shabbat is "Gan Eden." It is when we must remind ourselves that we have everything we need, and we have no reason to look at anything else. And thus there is special importance to שמירת עיניים, avoiding improper sights, on Shabbat.
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