The harm that you do to others is the harm that you do to yourself and you cannot think then that you can cause wars in other parts of the world and destroy people and drone them without this having a terrible impact on your own soul and your own consciousness.

It is true that when we harm others, we harm ourselves; but it is just as true that when we help others, we also help ourselves.

It is against our ethical principles as human beings to harm others. But aside from ethics, it is against our self-interest. The neurosis we cultivate in others inevitably rebounds against ourselves. From heavy-handed authority resentment and rebellion will develop. From sexual repression or dissatisfaction, anger, nervous tension and its consequences will arise.

NOT CAUSING HARM obviously includes not killing or robbing or lying to people. It also includes not being aggressive — not being aggressive with our actions, our speech, or our minds. Learning not to cause harm to ourselves or others is a basic Buddhist teaching on the healing power of nonaggression. Not harming ourselves or others in the beginning, not harming ourselves or others in the middle, and not harming ourselves or others in the end is the basis of enlightened society.

To harm another human releases your inner beast, allowing him to devour you in an orgy of hate. It will lead to a frenzy of butchery and bloodshed. And it will enslave your soul until a larger beast feasts on your corruptible flesh.

The alcoholic and the drug addict harm only themselves by their behavior; the person who violates the rules of morality governing mans life in society harms not only himself, but everyone.

The ground of not causing harm is mindfulness, a sense of clear seeing with respect and compassion for what it is we see. This is what basic practice shows us. But mindfulness doesn’t stop with formal meditation. It helps us relate with all the details of our lives. It helps us see and hear and smell, without closing our eyes or our ears or our noses. It’s a lifetime’s journey to relate honestly to the immediacy of our experience and to respect ourselves enough not to judge it. As we become more wholehearted in this journey of gentle honesty, it comes as quite a shock to realize how much we’ve blinded ourselves to some of the ways in which we cause harm. Our style is so ingrained that we can’t hear when people try to tell us, either kindly or rudely, that maybe we’re causing some harm by the way we are or the way we relate with others. We’ve become so used to the way we do things that somehow we think that others are used to it too. It’s painful to face how we harm others, and it takes a while.

One could only damage oneself through the harm one did to others. One could never get directly at oneself.

In general you must either pamper people or destroy them; harm them just a little and they’ll hit back; harm them seriously and they won’t be able to. So if you’re going to do people harm, make sure you needn’t worry about their reaction.

All beings tremble before violence.
All fear death.
All love life.

See yourself in others.
Then whom can you hurt?
What harm can you do?

[C]harm appertains to the essence of the person or thing endowed with it. It cannot be acquired, it cannot be got rid of, and its results are produced without effort, since the person who has it cannot help producing them.

Another person will not hurt you without your cooperation; you are hurt the moment you believe yourself to be.

It is unethical to hurt someone because we have been told to do so. We are required by decency to ask both the complainant and the accused how they understand the situation. And this, I truly believe, requires an in-person discussion. Asking hard questions and creating an environment in which complexities can be faced is, after all, what a real friend does.

Quien ofende a Dios, se daña a sí mismo y daña al prójimo Quiero hacerte saber cómo toda virtud y todo defecto repercuten en el prójimo. Quien vive en odio y enemistad conmigo, no sólo se daña a sí mismo, sino que daña a su prójimo. Le causa daño porque estáis obligados a amar al prójimo como a vosotros mismos, ya sea ayudándole espiritualmente con la oración, aconsejándole de palabra o socorriéndole espiritual y materialmente, según sea su necesidad. Quien no me ama a mí, no ama al prójimo; al no amarlo, no lo socorre. Se daña a sí mismo, privándose de la gracia, y causa daño al prójimo, porque toda ayuda que le ofrezca no puede provenir más que del afecto que le tiene por amor a mí. No hay pecado que no alcance al prójimo. Al no amarme a mí, tampoco lo quiere a él.