His marriage with my mother had been very happy, and in the researches of his own science, physics, he had been very happy.

But when mother died, his own work could not fill the emptiness.

At first, in a mild way, he had dabbled in philosophy; then, becoming interested, he had drifted on into economics and sociology.

He had a strong sense of justice, and he soon became fired with a passion to redress wrong.

It was with gratitude that I hailed these signs of a new interest in life, though I little dreamed what the outcome would be.