A notice reports that Neville, a nationally prominent author and teacher, returns to San Francisco for his 18th annual lecture series, with three Sunday morning talks at 11 o'clock at the Women's City Club Auditorium, 465 Post St. - 'What Is Truth?' (tomorrow), 'Hold God Trustworthy' (Sept. 20) and 'Assume The Wish Fulfilled' (Sept. 27) - plus ten weekday evening classes at 7:45, Monday through Friday, running from Sept. 14 to Sept. 25, admission $2.