PETA has a proven track record of success. Each victory PETA wins for the animals is a stepping stone upon which we build a more compassionate world for all beings - and we will never give up our fight until all animals are treated with respect and kindness.

This quote is talking about the work that the animal rights organization People for the Ethical Treatment of Animals (PETA) does. They have been successful in many of their campaigns for animals, and they use these successes as inspiration to keep going. PETA will never give up their fight to ensure that animals have respect and kindness in their treatment.