THE FORGER (375 pp.)Jay Williams Afheneum ($4.95).
This is the latest exposition of U.S. fiction's post-Socratic theorems: Find Thyself and Express Thyself. From Madison Avenue to Greenwich Village, from suburbia to Sunset Boulevard, the heroes of unnumbered novels are digging for their treasured psyches. In most instances, there is no treasure worth unearthing, all of which leads to another popular precept: Pity Thyself.
The 'hero of The Forger is Rufus Griffin, a Greenwich Village painter in his late 20s who makes poor money and worse puns ("All nudes is good nudes"). He falls in love with a rich man's girl friend...