“And is … mercy such a bad thing, aboshi?”

“Not bad; merely chaotic. If you look through the records in this hall, you will find the same story told again and again. Leniency and mercy. Men set free despite crimes, because they were good fathers, or well-liked in the community, or in the favor of someone important.
Some of those who are set free change their lives and go on to produce for society. Others recidivate and create great tragedies. The thing is, Szeth-son-Neturo, we humans are terrible at spotting which will be which. The purpose of the law is so we do not have to choose. So our native sentimentality will not harm us.”