I learn from thinking about the future, what hasn't been done yet. That's kind of my constant obsession.
“One is that we stand - my two confreres and I - in some degree as representatives of a great number of fellow workers over the entire world, who are enthusiastically active in this field of ours.”
“No individual is alone responsible for a single stepping stone along the path of progress, and where the path is smooth progress is most rapid.”