We can invent as many theories we like, and any one of them can be made to fit the facts. But that theory is always preferred which makes the fewest number of assumptions.
Interpretation
Theories should be simple and require minimal assumptions to explain facts.
In this quote, Albert Einstein emphasizes the importance of simplicity in scientific theories. He suggests that while it's possible to create numerous explanations for observed facts, the most valuable theory is the one that relies on the least assumptions, as it is more likely to be accurate and applicable.
In practice
During a scientific presentation to explain findings, you might use this quote to advocate for straightforward theories.
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.
A lot of my research time is spent daydreaming - telling an imaginary admiring audience of laymen how to understand some difficult scientific idea.
Now I know what the atom looks like.
I had as much time to prepare for that moon landing as NASA did, and I still was speechless when it happened. It just was so awe-inspiring to actually be able to see the thing through the television that was a miracle in itself.
When the dog is repeatedly teased with the sight of objects inducing salivary secretion from a distance, the reaction of the salivary glands grows weaker and weaker and finally drops to zero.
Cancer is a disease of the genome. And that's what happens. You make mistakes in a cell somewhere in your body that causes it to start to grow when it should've stopped, and that's cancer. And those mistakes are mistakes of DNA.
Geology has shared the fate of other infant sciences, in being for a while considered hostile to revealed religion; so like them, when fully understood, it will be found a potent and consistent auxiliary to it, exalting our conviction of the Power, and Wisdom, and Goodness of the Creator.
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