The Fox and the Bramble

In making his way through a hedge a Fox missed his footing and caught at a Bramble to save himself from falling. Naturally, he got badly scratched, and in disgust he cried to the Bramble, "It was your help I wanted, and see how you have treated me! I'd sooner have fallen outright." The Bramble, interrupting him, replied, "You must have lost your wits, my friend, to catch at me, who am myself always catching at others."