On the other hand, the concept owes its meaning and its justification exclusively to the totality of the sense impressions which we associate with it.

Physics is an attempt conceptually to grasp reality as something that is considered to be independent of its being observed. In this sense one speaks of physical reality.

One strength of the communist system of the East is that it has some of the character of a religion and inspires the emotions of a religion.

Knowledge of what is does not open the door directly to what should be.

A little knowledge is a dangerous thing. So is a lot.

God reveals himself in the orderly harmony of what exists.

God does not play dice.