Our senses enable us to perceive only a minute portion of the outside world. Our hearing extends to a small distance. Our sight is impeded by intervening bodies and shadows. To know each other we must reach beyond the sphere of our sense perceptions. We must transmit our intelligence, travel, transport the materials and transfer the energies necessary for our existence.

I do not think you can name many great inventions that have been made by married men.

Inventors don't have time for married life.

Is nature a giant cat? If so, who strokes its back?

Of all things I liked books best.

We build but to tear down. Most of our work and resource is squandered. Our onward march is marked by devastation. Everywhere there is an appalling loss of time, effort and life. A cheerless view, but true.

Our virtues and our failings are inseparable, like force and matter. When they separate, man is no more.