My scientific work is motivated by an irresistible longing to understand the secrets of nature not by other feelings.

We cannot resolve the problems of the world by unsing the same techniques that have created them.

The development of general ability for independent thinking and judgment should always be placed foremost, not the acquisition of special knowledge.

God is a scientist, not a magician.

I am convinced there is only one way to eliminate these grave evils, namely through the establishment of a socialist economy, accompanied by an educational system which would be oriented toward social goals.

Almost all the other fellows do not look from the facts to the theory but from the theory to the facts; they cannot get out of the network of already accepted concepts; instead, comically, they only wriggle about inside.

While it is true that science, to the extent of its grasp of causative connections, may reach important conclusions as to the compatibility and incompatibility of goals and evaluations, the independent and fundamental definitions regarding goals and values remain beyond science's reach.