Under a government which imprisons any unjustly, the true place for a just man is also a prison.
Henry David Thoreau (1817-1862) American philosopher and writer
Essay (1849-05), “Resistance to Civil Government [On the Duty of Civil Disobedience],” Æsthetic Papers, No. 1, Article 10
(Source)
Based on an 1848 lecture at the Concord Lyceum.