I can't think that it would be terrible of me to say - and it is occasionally true - that I need physics more than friends..

The optimist thinks this is the best of all possible worlds. The pessimist fears it is true..

The atomic bomb made the prospect of future war unendurable. It has led us up those last few steps to the mountain pass; and beyond there is a differ….

We may anticipate a state of affairs in which two Great Powers will each be in a position to put an end to the civilization and life of the other, th….

Today, it is not only that our kings do not know mathematics, but our philosophers do not know mathematics and - to go a step further - our mathemati….

There are no secrets about the world of nature. There are secrets about the thoughts and intentions of men..

The open society, the unrestricted access to knowledge, the unplanned and uninhibited association of men for its furtherance-these are what may make ….

The best way to send information is to wrap it up in a person..

If atomic bombs are to be added as new weapons to the arsenals of a warring world, or to the arsenals of nations preparing for war, then the time wil….

The people of this world must unite or they will perish..

When all thermonuclear sources of energy are exhausted a sufficiently heavy star will collapse. Unless fission due to rotation, the radiation of mass….

This world of ours is a new world, in which the unit of knowledge, the nature of human communities, the order of society, the order of ideas, the ver….

Despite the vision and farseeing wisdom of our wartime heads of state, the physicists have felt the peculiarly intimate responsibility for suggesting….

The greatest of the changes that science has brought is the acuity of change; the greatest novelty the extent of novelty..

Everyone wants rather to be pleasing to women and that desire is not altogether, though it is very largely, a manifestation of vanity. But one cannot….

Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new s….

No man should escape our universities without knowing how little he knows..

Maybe General Groves was right. Maybe we should just banish thinking forever..

If we ask, for instance, whether the position of the electron remains the same, we must say 'no'; if we ask whether the electron's position changes w….

This is a world in which each of us, knowing his limitations, knowing the evils of superficiality and the terrors of fatigue, will have to cling to w….

Genius sees the answer before the question..