Werner Heisenberg — "One day, when we have learned to understand the elementary particles, we will ha…"

"The problems of language here are really serious. We wish to speak in some way about the structure of the atoms. But we cannot speak about atoms in ordinary language."

"It is not surprising that our language should be incapable of describing the processes occurring within the atoms, for, as has been remarked, it was invented to describe the experiences of daily life,…"

"I don't believe a word of the whole thing they must have spent the whole of their £500. million in separating isotopes. and then it's possible."

"The human mind cannot be content with a description of phenomena; it wants to understand them."

"The very act of observing changes the observed."