“The clearest way into the Universe is through a forest wilderness.”

Go quietly, alone; no harm will befall you.

Few places in this world are more dangerous than home.

All the world was before me and every day was a holiday, so it did not seem important to which one of the world’s wildernesses I first should wander.

Climb the mountains and get their good tidings.

The galling harness of civilization drops off, and wounds heal ere we are aware.

Go where we will, all the world over, we seem to have been there before.

Yet through all this stress the forest is maintained in marvelous beauty.

Night is coming on and I am filled with indescribable loneliness. Felt feverish; bathed in a black, silent stream.

The power of imagination makes us infinite.

Going to the mountains is going home.

The deeper the solitude the less the sense of loneliness, and the nearer our friends.

It is always interesting to see people in dead earnest, from whatever cause, and earthquakes make everybody earnest.

We are now in the mountains and they are in us, kindling enthusiasm, making every nerve quiver, filling every pore and cell of us.

I never saw a discontented tree.

One day’s exposure to mountains is better than a cartload of books.

So also there are tides and floods in the affairs of men, which in some are slight and may be kept within bounds, but in others they overmaster everything.

Animals do not admire each other. A horse does not admire its companion.

The shadow escapes from the body like an animal we had been sheltering.

I’ve worked with Morris Animal Foundation for more than 40 years now, and I’m so proud of all they’ve done to advance veterinary medicine for animals worldwide.

Animal lover that I am, a cougar I am not.

To those people who say, ‘My father is alive because of animal experimentation,’ I say, ‘Yeah, well, good for you. This dog died so your father could live.’ Sorry, but I am just not behind that kind of trade-off.

Is it not first through the voice that one becomes animal?

The fate of animals is of greater importance to me than the fear of appearing ridiculous; it is indissolubly connected with the fate of men.

I don’t know where I learned elephants like their tongues slapped. Whatever turns you on.