The city of truth cannot be built on the swampy ground of skepticism.

The elemental fact, present in our consciousness every moment of our existence, is: I am life that wills to live, in the midst of life that wills to live.... The essence of the humane spirit is: Preserve life, promote life, help life to achieve its highest destiny. The essence of Evil is: Destroy life, harm life, hamper the development of life

The first step in the evolution of ethics is a sense of solidarity with other human beings.

Set a great example. Someone may imitate it.

We must fight against the spirit of unconscious cruelty with which we treat the animals. Animals suffer as much as we do. True humanity does not allow us to impose such sufferings on them. It is our duty to make the whole world recognize it. Until we extend our circle of compassion to all living things, humanity will not find peace.

For us the great men are not those who solved the problems, but those whodiscovered them.

Anyone who has accustomed himself to regard the life of any living creature as worthless is in danger of arriving also at the idea of worthless human lives.