"Scientists are pieces of the Universe trying to understand itself." --Anonymous.
If you have ever been a student in my class or if you are curious how scientists learn how Nature actually behaves (as opposed to what we presume Nature should behave), I highly recommend you read the following essay: Strong Inference.
It was written about 5 years before I was born, but I've just been aware of it. The message is as true 45 years ago (actually, as true as at least 400 years ago when Galileo started modern science) as it is today.