We eat an egg for Seudas Hamafsekes, and at other times of aveius, because the egg symbolizes the circularity of life.
A quarter of a century ago, I sat with an aching back on a hard step on the floor of my shul, unable to find even a marginally comfortable position, listening to Megillas Eichoh with my arms wrapped protectively around my expectant belly, which mere hours after, would help usher forth my bechor - my firstborn son. Last night, two and a half decades later, I once again sat low, though substantially more comfortable, listening to that very same child lein Megillas Eichoh for those assembled. A very small circle was complete.
There are far larger circles for us to ponder. Last night as I listened to the painful, aching words of Eichoh and read the haunting Kinoh written by Rav Schwab, lamenting the horrors of the holocaust, I longed for the completion of this larger circle. We are mandated to mourn the destruction of the Beis Hamikdash on this day and to yearn for its rebuilding. I wonder if both the mandate and the journey wouldn't be easier if we could glimpse the destination.