"Truth has to be repeated constantly, because Error also is being preached all the time, and not just by a few, but by the multitude. In the Press and Encyclopaedias, in Schools and Universities, everywhere Error holds sway, feeling happy and comfortable in the knowledge of having Majority on its side."
"Let mental culture go on advancing, let the natural sciences progress in even greater extent and depth, and the human mind widen itself as much as it desires: beyond the elevation and moral culture of Christianity, as it shines forth in the Gospels, it will not go."
"He who cannot draw on three thousand years is living from hand to mouth."
"Character develops itself in the stream of life."
"I love those who yearn for the impossible."
"Be above it! Make the world serve your purpose, but do not serve it!"