If the thickness is larger than the critical value I can produce an explosion.

Those individuals who give moral considerations a much greater weight than considerations of expediency represent a comparatively small minority, five percent of the people perhaps. But, In spite of their numerical inferiority, they play a major role in our society because theirs is the voice of the conscience of society.

If you want to succeed in the world, you don't have to be much cleverer than other people. You just have to be one day earlier.

You may assume infinite ignorance and unlimited intelligence.

Don't lie if you don't have to.

A great power imposes the obligation of exercising restraint, and we did not live up to this obligation. I think this affected many of the scientists in a subtle sense, and it diminished their desire to continue to work on the bomb.

In science it is not enough to think of an important problem on which to work. It is also necessary to know the means which could be used to investigate the problem.