Quote by Niels Bohr
"A physicist is someone who believes he has understood a problem after working on it for only a year."
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."