Quote by Niels Bohr
"An isolated material particle is an abstraction, its properties only being definable and observable in its interactions with other systems."
"An isolated material particle is an abstraction, its properties only being definable and observable in its interactions with other systems."
"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."