Despite the dipping temperatures, more than a few young families gathered at Barnes & Noble in Stamford on the cold, cold evening of Jan. 15, to enjoy a special reading of the book The Invisible String by Rabbi Mitch Hurvitz of Temple Sholom in Greenwich. The entertaining and poignant children’s book expresses the notion that humans are all connected by an invisible string of love. Following the reading, everyone in attendance was treated to a pizza party.