You have undertaken to cheat me. I won't sue you, for the law is too slow. I'll ruin you.

Summary

This quote reflects the speaker's response to being deceived or wronged by someone else. Rather than seeking legal recourse, the speaker intends to take immediate action to destroy or harm the person who has betrayed them. It suggests a desire for revenge or retaliation outside of conventional legal means, motivated by a belief that the legal system may not effectively address the injustice.