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.

Why is it that my heart is so touched whenever I meet a dog lost in our noisy streets? Why do I feel such anguished pity when I see one of these creatures coming and going, sniffing everyone, frightened, despairing of even finding its master?

If you shut up truth and bury it under the ground, it will but grow, and gather to itself such explosive power that the day it bursts through it will blow up everything in its way.

Man's highest duty is to protect animals from cruelty.

The only basis for living is believing in life, loving it, and applying the whole force of one's intellect to know it better.

Through the centuries, the history of peoples is but a lesson in mutual tolerance.

I do not despair in the least of ultimate triumph. I repeat it with intense conviction.