I am fascinated by Spinoza's pantheism, but admire even more his contributions to modern thought because he is the first philosopher to deal with the soul and the body as one, not two separate things

One must shy away from questionable undertakings, even when they bear a high-sounding name.

Our task is to widen our circle of compassion to include all living beings and all of nature

We [Jews] have no other means of self-defense than our solidarity

The truth of a theory can never be proven, for one never knows if future experience will contradict its conclusions.

Everybody should be ashamed who uses the wonders of science and engineering without thinking and having mentally realized not more of it than a cow realizes of the botany of the plants which it eats with pleasure.

So I am living without fats, without meat, without fish, but am feeling quite well this way. It always seems to me that man was not born to be a carnivore.