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Bridges Burned Burn Drop School Burning Make Decision

Idiom Burn Your Bridges Behind You
Example If you drop out of school now, you'll be burning your bridges behind you.
Meaning to make a decision you cannot change; to commit oneself to a course of action
Origin In ancient military history, soldiers actually burned down the bridge they had just crossed so they wouldn't be tempted to turn back in a cowardly way. (It also kept the enemy from following them over the same bridge.) Julius Caesar burned bridges to toughen up his troops.

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