Physical concepts are free creations of the human mind, and are not, however it may seem, uniquely determined by the external world.
Interpretation
Physical concepts are invented by humans and not solely shaped by the external environment.
In this quote, Albert Einstein emphasizes that the theories and concepts we have about the physical world are creations of human thought rather than direct reflections of reality. This highlights the importance of imagination and creativity in the scientific process, suggesting that our understanding of the universe is shaped as much by our minds as it is by concrete observations.
In practice
In a lecture about the philosophy of science, one could use this quote to discuss the role of human perception in understanding reality.
I cannot then believe in this concept of an anthropomorphic God who has the powers of interfering with these natural laws. As I said before, the most beautiful and most profound religious emotion that we can experience is the sensation of the mystical. And this mysticality is the power of all true science.
If I would follow your advice and Jesus could perceive it, he, as a Jewish teacher, surely would not approve of such behavior.
I want to know all Gods thoughts; all the rest are just details.
In the middle of adversity there is great opportunity.
I do not believe that civilization will be wiped out in a war fought with the atomic bomb. Perhaps two-thirds of the people of the earth will be killed.
To me the worst thing seems to be a school principally to work with methods of fear, force and artificial authority. Such treatment destroys the sound sentiments, the sincerity and the self-confidence of pupils and produces a subservient subject.
Light is the only connection we have with the Universe beyond our solar system, and the only connection our ancestors had with anything beyond Earth. Follow the light and we can journey from the confines of our planet to other worlds that orbit the Sun without ever dreaming of spacecraft. To look up is to look back in time, because the ancient beams of light are messengers from the Universe's distant past.
I fell in love with the elegance and precision of genetic analysis and experimentation to answer profound biological questions.
One theory which can no longer be taken very seriously is that UFOs are interstellar spaceships.
I came to dedicate my life to opening space to the average person and crafting designs for new spaceships that could take us far from home. But since Apollo ended, such travels were only in our collective memory.
When a coil is operated with currents of very high frequency, beautiful brush effects may be produced, even if the coil be of comparatively small dimensions. The experimenter may vary them in many ways, and, if it were nothing else, they afford a pleasing sight.
And as for other men, who worked in tank-rooms full of steam, and in some of which there were open vats near the level of the floor, their peculiar trouble was that they fell into the vats; and when they were fished out, there was never enough of them left to be worth exhibiting,-sometimes they would be overlooked for days, till all but the bones of them had gone out into the world as Durham's Pure Leaf Lard! This contributed to the passing of the Pure Food Act of 1906.
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