Do not let us speak of darker days, let us speak rather of sterner days. These are not dark days: these are great days-the greatest days our country has ever lived; and we must all thank God that we have been allowed, each of us according to our stations, to play a part in making these days memorable in the history of our race.
Everyone can recognize history when it happens. Everyone can recognize history after is has happened; but only the wise man knows at the moment what is vital and permanent, what is lasting and memorable.
Science is a wonderful thing if one does not have to earn one's living at it. One should earn one's living by work of which one is sure one is capable. Only when we do not have to be accountable to anybody can we find joy in scientific endeavor.