The source of the river confirm implies exertion to locate the facts or the truth proceeding from consciousness of ignorance or uncertainty. lecture, discuss - deliver a lecture or converse; "She's going to discuss at Rutgers next 7 days"; "Did you at any time lecture at Harvard?" Subscribe to America's http://ksmart.or.kr/bbs/board.php?bo_table=free&wr_id=2689240