All thinking begins with wondering.

The universe really is motion & nothing else.

The power of philosophy floats through my head.. light like a feather, heavy as lead.

The moral philosophy and spiritual conceptions of men and nations should hold their own amid these formidable scientific evolutions...No material progress, even though it takes shapes we cannot now conceive, or however it may expand the faculties of man, can bring comfort to his soul.

No two cities have counted more with mankind than Athens and Jerusalem. Their messages in religion, philosophy, and art have been the main guiding lights of modern faith and culture.

Skepticism is a virtue in history as well as in philosophy.