Quote by Niels Bohr
"Physics is to be regarded not so much as the study of something a priori given, i.e. something independent of how we act, but rather as the science of the description of nature by the help of our concepts."
More from Niels Bohr
"An expert is a person who has made all the mistakes that can be made in his field."
"The opposite of a correct statement is a false statement. But the opposite of a profound truth may well be another profound truth."
"Prediction is very difficult, especially if it's about the future."
"I go around as a ghost, and no one sees me."