Who said "The human farmers had exploited us for centuries!"?

This quote is attributed to Old Major.

The human farmers had exploited us for centuries! - Old Major

"The human farmers had exploited us for centuries!"

Old Major Justice

Character in Animal Farm

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"No animal shall sleep in a bed"

"No animal shall drink alcohol"

"No animal shall kill any other animal"

"Beasts of England, beasts of Ireland"

"Justice must always prevail."

"You think I'm just some animal?"

"Fighting for what's right never gets easier."

"Justice is worth fighting for."