Trying, Failing, Waiting, Building  New paintings by Philip Petrie at Low Gallery, 1878 Main St. (in the alley), Barrio Logan, San Diego.  For Philip Petrie’s second exhibition at Low Gallery this year, he is presenting recent oil paintings which focus on the movement of the self and society toward real wholeness both physical and spiritual.  Opening from 7 to 10 p.m. Saturday, Sept. 10.  Free.  www.lowgallerysd.com.