“The world as we have created it is a process of our thinking. It cannot be changed without changing our thinking.”

“The unleashed power of the atom has changed everything except our thinking. Thus, we are drifting toward catastrophe beyond conception. We shall require a substantially new manner of thinking if mankind is to survive.”

“We can not solve our problems with the same level of thinking that created them”

“The significant problems we have cannot be solved at the same level of thinking with which we created them.”

“The release of atomic power has changed everything except our way of thinking ... the solution to this problem lies in the heart of mankind. If only I had known, I should have become a watchmaker. (1945)”

“Energy cannot be created or destroyed, it can only be changed from one form to another.”

“Paper is to write things down that we need to remember. Our brains are used to think.”