"If you cannot explain it simply, you do not understand it well enough."

"The total number of minds in the universe is one. In fact, consciousness is a singularity."

"The most amazing thing about the world is that it is comprehensible."

"Even if I should be right in this, I do not know whether my way of approach is really the best and simplest. But, in short, it was mine."

"The greatest obstacle to progress in science is the belief that one knows something which one does not know."