“ahimsa, often translated as "non-violence."
More accurately it means "non-harming," having an attitude of mind that does not wish injury to any creature, not merely for human beings, but for plants, animals and the entire natural order. For it to be complete, ahimsa must extend not only to action but also to speech and to thought.
Ahimsa is the most important observance in the practice of yoga and the basis for mental peace, which is not possible if we harbor thoughts of harm for others.”
―
David Frawley,
Yoga & Ayurveda: Self-Healing and Self-Realization