The conflict between what in its present mood the public expects science to achieve in satisfaction of popular hopes and what is really in its power is a serious matter because, even if the true scientists should all recognize the limitations of what they can do in the field of human affairs, so long as the public expects more there will always be some who will pretend, and perhaps honestly believe, that they can do more to meet popular demands than is really in their power. It is often difficult enough for the expert, and certainly in many instances impossible for the layman, to distinguish between legitimate and illegitimate claims advanced in the name of science.

The confidence in the unlimited power of science is only too often based on a false belief that the scientific method consists in the application of a ready-ma…

If I am not mistaken, psychology, psychiatry and some branches of sociology, not to speak about the so-called philosophy of history, are even more affected by …

Allow me to define more specifically the inherent limitations of our numerical knowledge which are so often overlooked. I want to do this to avoid giving the i…

Science does not give us absolute and final certainty. It only gives us assurance within the limits of our mental abilities and the prevailing state of scienti…

I often say that when you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot express it in nu…

'Faith' is a fine invention When Gentlemen can see - But Microscopes are prudent In an Emergency.