Schopenhauer was the high priest of philosophical pessimism. Lynn Ferguson is a writer and actress who, after giving birth to a son in her late 30s, suffered from post-natal depression. The two unexpectedly come together, fuse and fizzle in Ferguson's monologue in which she tries to make sense of her feelings of love and inadequacy while glancing over her shoulder at the woman-hating German. After all, what did Schopenhauer know of babies? Would he have so eagerly embraced indifference when faced with the unconditional love of the tiny baby?
Ferguson's story combines wit, feeling and fierce intelligence. It helps that she performs it in such an understated manner.
Ferguson's monologue would be enough, but it comes with one of two other monologues in which biography and celebrity come together. One is from Donna Air; the other - the one performed on the day of my visit - is Rachel Ogilvy's story of the break-up of her marriage. It is bright and breezy, but only serves to remind that Ferguson's offering is in an entirely different league.
· Until Monday. Box office: 0131-226 2428.
