We must substitute courage for caution. Autor: Martin Luther King Jr. Copy Quote More from Martin Luther King Jr. “An unjust law is a human law that is not rooted in eternal law and natural law.…” “The ultimate tragedy of Birmingham was not the brutality of the bad people, but…” “We refuse to believe that there are insufficient funds in the great vaults of o…” “On the one hand we are called to play the good Samaritan on life's roadside; bu…”