Scientific research? Only when not at the cost of ethics-and first of all, those of the researchers themselves.

The Universe has as many different centers as there are living beings in it.

If you wanted to put the world to rights, who should you begin with: yourself or others?

Even if we are spared destruction by war, our lives will have to change if we want to save life from self-destruction.

Not all of me shall die.

When truth is discovered by someone else, it loses something of its attractiveness.

It's an universal law-- intolerance is the first sign of an inadequate education. An ill-educated person behaves with arrogant impatience, whereas truly profound education breeds humility.