Complex sentence: He wrote hate mail to the sniper, suggesting that "what goes around, comes around," and he later considered putting aside his plan to target the Murrah Building to target Horiuchi, or a member of his family instead.
Split into simpler sentences: He wrote hate mail to the sniper, suggesting that "what goes around, comes around". He later considered putting aside his plan to target the Murrah Building to target Horiuchi, or a member of his family instead.