If anybody says he can think about quantum physics without getting giddy, that only shows he has not understood the first thing about them.
Interpretation
Understanding quantum physics is so complex that it can overwhelm those who truly grasp its principles.
Niels Bohr emphasizes that the profound and often counterintuitive nature of quantum physics is such that a true understanding leads to a sense of wonder or even confusion. If one feels unfazed by the complexities of quantum mechanics, it likely indicates that they have not fully grasped its intricacies and the philosophical implications it carries.
In practice
During a lecture on advanced physics, a professor might quote Bohr to illustrate the challenging nature of quantum mechanics.
When asked ... [about] an underlying quantum world, Bohr would answer, 'There is no quantum world. There is only an abstract quantum physical description. It is wrong to think that the task of physics is to find out how nature is. Physics concerns what we can say about Nature.'
An independant reality in the ordinary physical sense can neither be ascribed to the phenomenon nor to the agencies of observation.
An expert is a man who has made all the mistakes which can be made, in a narrow field.
Those who are not shocked when they first come across quantum theory cannot possibly have understood it.
When searching for harmony in life one must never forget that in the drama of existence we are ourselves both actors and spectators.
And anyone who thinks they can talk about quantum theory without feeling dizzy hasn't yet understood the first thing about it.
I call on all scientists in all countries to cease and desist from work creating, developing, improving and manufacturing further nuclear weapons - and, for that matter, other weapons of potential mass destruction such as chemical and biological weapons.
A discovery is like falling in love and reaching the top of a mountain after a hard climb all in one, an ecstasy not induced by drugs but by the revelation of a face of nature that no one has seen before and that often turns out to be more subtle and wonderful than anyone had imagined.
Unlike science, creationism cannot predict anything, and it cannot provide satisfactory answers about the past.
Spacewalking trumps everything. Viscerally, it is a phenomenal place to be; to be able to glance right and see the world, glance left and see the universe, and realise for a moment that you're holding on to your known existence with one hand. That's the thing.
...there is simply nothing so important to a people and its government as how many of them there are, whether their number is growing or declining, how they are distributed as between different ages, sexes, and different social classes and racial and ethnic groups, and again, which way these numbers are moving.
In order to shake a hypothesis, it is sometimes not necessary to do anything more than push it as far as it will go.
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