Capitalism has brought with it progress, not merely in production but also in knowledge.

The ideals which have always shone before me and filled me with the joy of living are goodness, beauty, and truth.

Brief is this existence, as a visit in a strange house. The path to be pursued is poorly lit by a flickering consciousness.

I believe that the first step in the setting of a real external world is the formation of the concept of bodily objects and of bodily objects of various kinds.

Joy and amazement of the beauty and grandeur of this world of which man can just form a faint notion.

A theory is the more impressive the greater the simplicity of its premises is, the more different kinds of things it relates, and the more extended is its area of applicability. Therefore the deep impression which classical thermodynamics made upon me. It is the only physical theory of universal content concerning which I am convinced that within the framework of the applicability of its basic concepts, it will never be overthrown.

You believe in the God who plays dice, and I in complete law and order in a world that objectively exists, and which I, in a wildly speculative way, am trying to capture. ... Even the great initial success of the quantum theory does not make me believe in the fundamental dice-game, although I am well aware that our younger colleagues interpret this as a consequence of senility. No doubt the day will come when we will see whose instinctive attitude was the correct one.