The brutalities of progress are called revolutions. When they are over we realize this: that the human race has been roughly handled, but that it has advanced.
Science has given to this generation the means of unlimited disaster or of unlimited progress. There will remain the greater task of directing knowledge lastingly towards the purpose of peace and human good.
Truth should be the very breath of our life. When once this state in the pilgrim's progress is reached, all other rules of correct living will come without any effort, and obedience to them will be instinctive.