(A lecture given by Master Sheng-yen at the Washington University, St. Louis, Missouri on April 17, 1990.) I would like to thank Professor Grant and the university for inviting me here today. From the introduction given me, you may have the impression that, having written numerous books on the subject, I know a great deal about Buddhism. But throughout my study and practice of Buddhism, one important lesson has been drilled into me: once you've learned something, be sure to forget it. more