Redoubtable

In April 1872, the US Bureau of Education's Circular of Information left nothing to the imagination when it discussed something it called "the problem of educational schooling:' According to the Bureau, by inculcating accurate knowledge workers would "perceive and calculate their grievances;' making them "redoubtable foes" in labor struggles! Best not have that.
--John Taylor Gatto, "Weapons Of Mass Instruction", p. 15