Science is what we have learned about how to keep from fooling ourselves.
Interpretation
Science helps us understand the truth and avoid self-deception.
Richard P. Feynman's quote highlights the essence of science as a discipline aimed at uncovering reality. Instead of being misled by our biases or misconceptions, science encourages a systematic approach to learning and understanding the world around us, enabling individuals to critically assess information and arrive at valid conclusions.
In practice
In a college lecture on critical thinking, this quote can be used to emphasize the importance of skepticism in scientific inquiry.
The philosophical question before us is, when we make an observation of our track in the past, does the result of our observation become real in the same sense that the final state would be defined if an outside observer were to make the observation?
We seem gradually to be groping toward an understanding of the world of subatomic particles, but we really do not know how far we have yet to go in this task.
The first principle is that you must not fool yourself and you are the easiest person to fool.
It has not yet become obvious to me that there's no real problem. I cannot define the real problem; therefore, I suspect there's no real problem, but I'm not sure there's no real problem.
For far more marvelous is the truth than any artists of the past imagined it. Why do the poets of the present not speak of it? What men are poets who can speak of Jupiter if he were a man, but if he is an immense spinning sphere of methane and ammonia must be silent?
Science is a way to teach how something gets to be known, what is not known, to what extent things are known (for nothing is known absolutely), how to handle doubt and uncertainty, what the rules of evidence are, how to think about things so that judgments can be made, how to distinguish truth from fraud, and from show.
When a scientist is ahead of his times, it is often through misunderstanding of current, rather than intuition of future truth. In science there is never any error so gross that it won't one day, from some perspective, appear prophetic.
A science which hesitates to forget its founders is lost.
The history of the universe is, in effect, a huge and ongoing quantum computation. The universe is a quantum computer.
In my studies of astronomy and philosophy I hold this opinion about the universe, that the Sun remains fixed in the centre of the circle of heavenly bodies, without changing its place; and the Earth, turning upon itself, moves round the Sun.
Instead, in the absence of respect for human rights, science and its offspring technology have been used in this century as brutal instruments for oppression.
You have to know evolution to understand the natural world. And that cannot be a threat to people of faith. There's a serious problem if you are forced by your faith to reject the most well-supported theory in all of science.
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