Quotes by Error How is an error possible in mathematics? Henri Poincare error possible how mathematics There is no error so monstrous that it fails to find defenders among the ablest men. John Dalberg-Acton among error find men There's a lot of room for error with a wound in the rear. It's a wide target. James Garner wound error room target The great western error about the Taliban is to assume homogeneity. Philip Hammond assume error about great Failure is essential. Trial and error is necessary. David Bergen essential necessary error failure