Jacob Bronowski Quotes

The brain cannot reach its inner conclusions by any logic of certainty. In place of this, the brain must do two things. It must be content to accept less than certain knowledge. And it must have statistical methods which are different in kind from ours, by which it reaches its acceptable level of uncertainty. By these means, the brain constructs a picture of the world which is less than certain yet highly interlocked in its parts.

You cannot love the girl without being conscious of the fact that she has yellow hair, you cannot see the world without the intervention of the physical senses.

We become more and more aware that what we think about the world is not what the world is but what the human animal sees of the world.

Progress is the exploration of our own error. Evolution is a consolidation of what have always begun as errors. And errors are of two kinds: errors that turn out to be true and errors that turn out to be false (which are most of them). But they both have the same character of being an imaginative speculation. I say all this because I want very much to talk about the human side of discovery and progress, and it seems to me terribly important to say this in an age in which most non-scientists are feeling a kind of loss of nerve.

The poem and the drama is not the experience except as we identify ourselves with it, and know what it feels like to have it. What distinguishes literature is that it cannot be understood unless we understand what it is like to be human.

what we call cultural evolution is essentially a constant growing and widening of the human imagination.

Yet, the principle of uncertainty is a bad name. In science or outside of it, we are not uncertain. Our knowledge is merely confined within a certain tolerance. We should call it the principle of tolerance. First in the engineering sense. Science has progressed, step by step, the most successful enterprise in the ascent of man, because it has understood that the exchange of information between man and nature, and man and man, can only take place with a certain tolerance. But I also use the word, passionately, about the real world. All knowledge, all information, between human beings, can only be exchanged within a play of tolerance, and that's whether it's in science, or in literature, or in religion, or in politics, or in any form of though that aspires to dogma.

Man masters nature not by force but by understanding.

We cannot hope to recapture today the terror that the mounted horse struck into the Middle East and Eastern Europe when it first appeared. That is because there is a difference of scale which I can only compare with the arrival of tanks in Poland in 1939, sweeping all before them. I believe that the importance of the horse in European history has always been underrated. In a sense, warfare was created by the horse, as a nomad activity. That is what the Huns brought, that is what the Phrygians brought, that is what finally the Mongols brought, and brought to a climax under Genghis Khan much later. In particular, the mobile hordes transformed the organisation of battle. They conceived a different strategy of war – a strategy that is like a war game; how, warmakers love to play games!

That is the essence of science: ask an impertinent question, and you are on the way to a pertinent answer.

A man becomes creative, whether he is an artist or a scientist, when he finds a new unity in the variety of nature. He does so by finding a likeness between things which were not thought alike before, and this gives him a sense at the same time of richness and of understanding. The creative mind is a mind that looks for unexpected likenesses.

The new theory, of course, always subsumes more effects than the old. But the remarkable thing is that when it is discovered, it also wholly changes our conception of how the world works.

No science is immune to the infection of politics and the corruption of power.

But we are in any case mistaken if we think of our picture of the world as a passive record. The picture is made by, it is made of, our activity, all the way from the logic of the brain to the use of the plow and the wheel.

The democracy of the intellect comes from the printed book…