If we were bees, ants, or Lacedaemonian| warriors, to whom personal fear does not exist and cowardice is the most shameful thing in the world, warring would go on forever. But luckily we are only men — and cowards.

An animal that embarks on forming states without greatly restricting egoism will perish.

[Plato] was the first to envisage the idea of timeless existence and to emphasize it-against reason-as a reality, more [real] than our actual experience.

A careful analysis of the process of observation in atomic physics has shown that the subatomic particles have no meaning as isolated entities, but can only be understood as interconnections between the preparation of an experiment and the subsequent measurement.

For eternally and always there is only now, one and the same now; the present is the only thing that has no end.

If you cannot - in the long run - tell everyone what you have been doing, your doing has been worthless.

We do not belong to this material world that science constructs for us. We are not in it; we are outside. We are only spectators. The reason why we believe that we are in it, that we belong to the picture, is that our bodies are in the picture. Our bodies belong to it. Not only my own body, but those of my friends, also of my dog and cat and horse, and of all the other people and animals. And this is my only means of communicating with them.