Something nudged at his wrist. He shot upward with a yelp and leaped away from the rose bushes. He seized a loose rock and threw it into the bushes. The crash was louder than he had expected. He scratched at his beard and felt sheepish. He waited. Nothing emerged from the bushes. Nothing slithered. He tossed a pebble. It too rattled offensively in the darkness. He waited, but nothing stirred in the bushes. Ask for an omen, then stone it when it comes-de essentia hominum.