Give up thinking as though not giving it up. Observe techniques as though not observing.
The judge should not be young; he should have learned to know evil, not from his own soul, but from late and long observation of the nature of evil in others: knowledge should be his guide, not personal experience.
Whether you can observe a thing or not depends on the theory which you use. It is the theory which decides what can be observed.
Objecting to the placing of observables at the heart of the new quantum mechanics, during Heisenberg's 1926 lecture at Berlin.
I believe in evidence. I believe in observation, measurement, and reasoning, confirmed by independent observers. I'll believe anything, no matter how wild and ridiculous, if there is evidence for it. The wilder and more ridiculous something is, however, the firmer and more solid the evidence will have to be.
The Roving Mind
The power of accurate observation is commonly called cynicism by those who have not got it.
George Bernard Shaw
I don't work according to Nature, but in front and together with it. An artist must observe Nature, but never confuse it with the art.
Leonardo da Vinci
Out of My Later Years
The Picture of Dorian Gray
Long Walk to Freedom
How To Stop Worrying And Start Living
How to Win Friends and Influence People
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