But steel bars have never yet kept out a mob; it takes something a good deal stronger: human courage backed up by the consciousness of being right.

When Lord Kelvin was in this country [U.S.], he said that nothing interested him so much as Mr. Hewitt's work and his vacuum lamp.

Nothing lasts-not even pain.

Most of us have collections of sayings we live by. . . . Whenever words fly up at me from the printed page as I read, I intercept them instantly, knowing they are for me. I turn them over carefully in my mind and cling to them hard.

Adventure is not outside; it is within.

There must be a technique for meeting pain. There must be a technique of endurance based on the power of the soul to maintain its own serenity, as Marcus Aurelius taught long ago.

At first everyone predicted that it would be impossible to hold these divergent people together, but aside from the skilled men, some of whom belonged to craft unions, comparatively few went back to the mills. And as a whole, the strike was conducted with little violence.