He who is content with what has been done is an obstacle in the path of progress.

The world is sown with good; but unless I turn my glad thoughts into practical living and till my own field. I cannot reap a kernel of the good.

I never fight, except against difficulties.

World peace will never come until the passion of supremacy is combated.

When one doors closes, another door opens.

The civilization of a state should be measured by the amount of suffering it prevents and the degree of happiness it makes possible for its citizens.

Optimism, then, is a fact within my own heart. But as I look out upon life, my heart meets no contradiction. The outward world justifies my inward universe of good.