The worst calamity: 'To have eyes and fail to see.'

If you look toward the sunshine, you will never see the shadows.

Ignorance, poverty, and greed must disappear so that light can prevail in all places.

My optimism is grounded in two worlds, myself and what is about me. I demand that the world be good, and lo, it obeys. I proclaim the world good, and facts range themselves to prove my proclamation overwhelmingly true.

This world is so full of care and sorrow that it is a gracious debt we owe to one another to discover the bright crystals of delight hidden in somber circumstances and irksome tasks.

I am a child of my generation, and I rejoice that I live in such splendidly disturbing times.

Once it was necessary that the people should multiply and be fruitful if the race was to survive. But now to preserve the race it is necessary that people hold back the power of propagation.