I hope that each one of you will become just, and direct your thoughts towards the unity of mankind; that you will never harm your neighbours nor speak ill of any one; that you will respect the rights of all men, and be more concerned for the interests of others than for your own.

‘Abdu’l-Bahá, Paris Talks, p. 160

If history should repeat itself and all these same things should happen to you, do not be saddened but be full of joy, and thank God that you are called upon to suffer as holy men of old suffered. If they oppose you be gentle with them, if they contradict be firm in your faith, if they desert you and flee from before you, seek them out and treat them kindly. Do harm to nobody; pray for all; try to make your light shine in the world and let your banner fly high in the Heavens. The beautiful perfume of your noble lives will permeate everywhere. The light of truth kindled in your hearts will shine out to the distant horizon! The indifference and scorn of the world matters not at all, whereas your lives will be of the greatest importance.

‘Abdu’l-Bahá, Paris Talks, p. 118

Praise be to God! You are living in a land of freedom. You are blessed with men of learning, men who are well versed in the comparative study of religions. You realize the need of unity and know the great harm which comes from prejudice and superstition. I ask you, Is not fellowship and brotherhood preferable to enmity and hatred in society and community? The answer is self-evident.

‘Abdu’l-Bahá, Foundations of World Unity, p. 99

Sensibility is the same whether you harm man or animal: there is no difference. Nay, rather, cruelty to the animal is more painful because man has a tongue and he sighs, complains and groans when he receives an injury and complains to the government and the government protects him from cruelty; but the poor animal cannot speak, it can neither show its suffering nor is it able to appeal to the government. If it is harmed a thousand times by man it is not able to defend itself in words nor can it seek justice or retaliate. Therefore one must be very considerate towards animals and show greater kindness to them than to man.

‘Abdu’l-Bahá, Bahá’í World Faith, p. 373

That it is one's duty to be pitiful and harm no one, and to avoid jealousy and malice at all costs.

‘Abdu’l-Bahá, Paris Talks, p. 79