I've always thought that the most powerful weapon in the world was the bomb and that's why I gave it to my people, but I've come to the conclusion that the most powerful weapon in the world is not the bomb but it's the truth

A country which does not respect the rights of its own citizens will not respect the rights of its neighbours

You can't sit on two chairs at once.

In and after 1964 when I began to concern myself with the biological issues, and particularly from 1967 onwards, the extent of the problems over which I felt uneasy increased to such a point that in 1968 I felt a compelling urge to make my views public.

Do not trust governments more than governments trust their own people.

Profound insights arise only in debate, with a possibility of counterargument, only when there is a possibility of expressing not only correct ideas but also dubious ideas.

International affairs must be completely permeated with scientific methodology and a democratic spirit, with a fearless weighing of all facts, views, and theories, with maximum publicity of ultimate and intermediate goals, and with a consistency of principles.