Immigration is one of the leading contributors to population growth.

If you want to know where you would have stood on slavery before the Civil War, don’t look at where you stand on slavery today. Look at where you stand on animal rights.

In the great scheme of things, what matters is not how long you live but why you live, what you stand for and what you are willing to die for.

It doesn't matter what is true, it only matters what people believe is true.

Intelligence is the ability of a species to live in harmony with its environment.

WE CAN NOT LIVE ON THIS PLANET WITH DEAD OCEANS. IF OUR OCEANS DIE, WE DIE.

A vegan riding a hummer contributes less to greenhouse gas emissions than a meat eater riding a bicycle.

What we need now is heroes - millions of them. Sentiment without action is the ruin of the soul.

Almost all theological thought is anthropocentric and I just cannot buy into the anthropocentric ideology. Basically we're a bunch of conceited apes.

Follow your dreams and use your natural born talents and skills to make this a better world for tomorrow.

That fact is that we live in an extremely violent culture, and we all justify violence if it's for what we believe in .

And Sir, it is no little thing to make mine eyes to sweat compassion.

Sometimes you're fighting corporations and forget that people can talk to each other.

And so do people pass out of one's life and all you can remember of them is their humanity, a poor fitful thing of no dominion, like your own.

It is possible that the contemplation of cruelty will not make us humane but cruel; that the reiteration of the badness of our spiritual condition will make us consent to it.

Always take time to smell the flowers, and let it fill you with beauty, and rediscover that sense of wonder.

I'm someone who lived in a war for five years. I received bombs on my head every day of my childhood. Did that stop me from living? Did that stop me from laughing?

The world is truly round and seems to start and end with those we love.

It is a long baptism into the seas of humankind, my daughter. Better immersion than to live untouched.

If a writer wrote merely for his time, I would have to break my pen and throw it away.

It does not follow that the meaning must be given from above; that life and suffering must come neatly labeled; that nothing is worth while if the world is not governed by a purpose.