Scale man says you got rocks to make weight. How ’bout him? His scales is fixed. Sometimes he’s right, you got rocks in the sack. Sometimes you’re right, the scales is crooked. Sometimes both; rocks an’ crooked scales.
– John Steinbeck
The Grapes of Wrath, Chapter 27. The theme of deception and dishonesty is dealt with here, as farm owners try to cheat workers and they attempt to even the scales by cheating in return.