All’s fair in love and war

All’s fair in love and war is a proverb. A proverb is a short, common saying or phrase that may be a famous quote, an inspirational quote, an epigram, or the topic of a parable. These common sayings are language tools or figures of speech that particularly give advice or share a universal truth, or […]
from Grammarist
https://grammarist.com/usage/alls-fair-in-love-and-war/