Only the [Catholic] Church stood squarely across the path of Hitler’s campaign for suppressing truth. I never had any special interest in the Church before, but now I feel a great affection and admiration because the Church alone has had the courage and persistence to stand for intellectual truth and moral freedom. I am forced thus to confess that what I once despised I now praise unreservedly.

The armament industry is indeed one of the greatest dangers that beset mankind. It is the hidden evil power.

The number of natural hypothesis that can explain any given phenomena is infinite.

It would be a sad situation if the bag was better than the meat wrapped in it.

Although I cannot believe that the individual survives the death of his body, feeble souls harbor such thought through fear or ridiculous egotism.

The man of science is a poor philosopher.

Nationalism is an infantile disease. It is the measles of mankind.