Ambition is the grand enemy of all peace.

One needs no strange spiritual faith to worship the earth.

The love that interferes and knows not how to leave alone is a love alien to Nature's ways.

What is the importance of human lives? Is it their continuing alive for so many years like animals in a menagerie? The value of a man cannot be judged by the number of diseases from which he escapes. The value of a man is in his human qualities: in his character, in his conscience, in the nobility and magnanimity, of his soul. Torturing animals to prolong human life has separated science from the most important thing that life has produced - the human conscience.

Let none count themselves wise who have not with the nerves of their imagination felt the pain of the vivisected.

It is strange how few people make more than a casual cult of enjoying Nature. And yet the earth is actually and literally the mother of us all. One needs no strange spiritual faith to worship the earth.

A bookshop is powder-magazine, a dynamite-shed, a drugstore of poisons, a bar of intoxicants, a den of opiates, an island of sirens.