On November 10, 1911, ‘Abdul-Bahá gave a talk on the evolution of the spirit. He said that “all things either make progress or lose ground. Everything moves forward or backward, nothing is without motion.”
Full talk available here.
Ivan Mihoci, Mary Okonkwo, & Lorraine Sherrill
Abdullah Norozi, Christian Holyoak, Renato Guilarducci, Sofie Geschier