The tragedy of life is what dies in the hearts and souls of people while they live.

The supreme task of the physicist is to arrive at those universal elementary laws from which the cosmos can be built up by pure deduction. There is no logical path to these laws; only intuition, resting on sympathetic understanding of experience, can reach them.

It must be conceded that a theory has an important advantage if its basic concepts and fundamental hypotheses are 'close to experience,' and greater confidence in such a theory is certainly justified. There is less danger of going completely astray, particularly since it takes so much less time and effort to disprove such theories by experience. Yet more and more, as the depth of our knowledge increases, we must give up this advantage in our quest for logical simplicity in the foundations of physical theory.

A religious person is devout in the sense that he has no doubt about the significance of those superpersonal objects and goals which neither require nor are capable of rational foundation

A conflict arises when a religious community insists on the absolute truthfulness of all statements recorded in the Bible. This means an intervention on the part of religion into the sphere of science; this is where the struggle of the Church against doctrines of Galileo and Darwin belongs.

Political leaders or governments owe their position partly to force and partly to popular election. They cannot be regarded as representative of best elements, morally or intellectually, in their respective nations.

I believe that the horrifying deterioration in the ethical conduct of people today stems from the mechanization and dehumanization of our lives. A disastrous by-product of the development of the scientific and technical mentality. We are guilty. Man grows cold faster than the planet he inhabits.