"The scientist must be a dreamer and a realist at the same time."

"There is no matter as such. All matter originates and exists only by virtue of a force."

"There can be no such thing as a 'pure' science, as science is always influenced by the human mind."

"The true scientist is a man who is always asking questions, and never satisfied with the answers."

"We have no right to assume that any physical laws exist, or if they have existed up to now, that they will continue to exist in a similar manner in the future."