We must substitute courage for caution. Autore: Martin Luther King Jr. Copy Quote More from Martin Luther King Jr. “Human progress never rolls in on wheels of inevitability; it comes through the …” “The ultimate tragedy of Birmingham was not the brutality of the bad people, but…” “No work is insignificant. All labor that uplifts humanity has dignity and impor…” “Babies, we are told, are the latest news from heaven.”