Related:

• Klingons do not surrender. -- Worf, "The Emissary", stardate 42901.3
• Klingons do not faint. -- Worf to Dr. Pulaski, "Up the Long Ladder", stardate 42823.2
• Klingons do not give in to illness. -- Worf to Dr. Pulaski, "Up the Long Ladder", stardate 42823.2
• Cowards take hostages. Klingons do not. -- Worf to Yar, "Heart of Glory", stardate 41503.7
• Klingons appreciate strong women. -- Worf, "Angel One", stardate 41636.9
• Do Klingons fear death as much as humans? I could snap your neck in a second, but it wouldn't be as much fun.
  -- Admiral Quinn to Worf, "Conspiracy", stardate 41775.5...
• Tarmin: "But there is nothing to fear?" Jev: "Father.
  .." Worf: "I am not fearful." -- "Violations", Stardate 45429.3...
• Tarmin: "Well you, Mister Worf, I would love to explore Klingon memories.
  -- "Violations", Stardate 45429.3...
• You were bluffing. Klingons never bluff. -- Geordi and Worf, "The Emissary", stardate 42901.3