Quotations for activists for the causes of Human Rights, Animal Rights, and the Environment. 

“By Ethical Conduct toward all creatures, we enter into a spiritual relationship with the universe.” 
Albert Schweitzer

“I have from an early age abjured the use of meat, and the time will come when men such as I will look upon the murder of animals as they now look upon the murder of men.”
Leonardo da Vinci

“Don’t talk of peace and love when you have a dead animal on your plate”.
Socrates

“Adapt yourself to the things among which your lot has been cast and love sincerely the fellow creatures with whom destiny has ordained that you shall live.”
Marcus Aurelius

Here are MORE quotations (some with slogans and information) for activists for the causes of Human Rights Animal Rights, and the Environment.