The Regensburg Library at the University of Chicago contains a catalogue of markings and stamps from books saved from Nazi destruction. One such stamp comes from the library of the Karlin-Stolin Hasidim, a collection that might contain the most valuable manuscript for understanding the roots of Hasidism. But where is it?
One who prays to change the past, says the Mishnah, “utters a vain prayer.” A person should not beseech God to undo events that have already taken place, even when the outcome is still unknown. And yet there are circumstances where one is naturally tempted to do just that.