Editor's note: We were deeply saddened to learn of Dr. Maya Angelou's passing. The following is from Dr. Angelou's January 2011 appearance on Oprah's Master Class. Dr. Maya Angelou says they can seep into the walls, every fabric in your home and, eventually, you. Find out why Dr. Angelou says words are things, and hear her discuss their great power. More from this Episode: www.oprah.com/own-master-class/Oprah-Presents-Master-Class-with-Maya-Angelou Subscribe to OWN: bit.ly/18Lz0rV For more on Oprah's Master Class, visit www.oprah.com/MasterClass Find OWN on TV at www.oprah.com/FindOWN Visit our channel for more videos: www.youtube.com/user/OWN www.facebook.com/ownTV twitter.com/OWNTV instagram.com/oprah www.pinterest.com/oprah