I liked and admired the intensity and viscosity of the Auerbach exhibition, treating the same subjects over and over again, the view from Mornington Crescent or Primrose Hill, his wife Julia or, much less often, Jake, and his regular sitters, Catherine Lampert and David Landau, described in the commentary as a businessman, but, just as importantly, an art historian.   I particularly admired the two Self Portraits, one early one from 1958, chalk and charcoal, and a later drawing which ends the exhibition from only last year.   It’s quite reassuring to see someone so consistently responding only to the challenges of the interpretation and layering of paint as decade follows decade in the sequence of rooms.