Morrie Schwartz, a retired sociology professor battling ALS, became one of Nightline's most memorable subjects when he sat down with former anchor Ted Koppel for a series of conversations about living while facing death. Today, Morrie’s son Rob Schwartz is sharing more words of wisdom from his late father in a new book, “The Wisdom of Morrie,” that he found sitting in a drawer. ABC News’ George Stephanopoulos has more on the manuscript written by Morrie himself before he fell ill. https://bit.ly