It is painful to me to be always on the surface of things.

Not that I wish for much of what is called religious conversation.

That is often apt to be on the surface.

But I want a sign which one catches by a sort of masonry, that a man knows what he is about in life.

When I find this it opens my heart with as fresh a sympathy as when I was twenty years younger." Archimedes, the greatest geometer of antiquity, was consulted by the king in regard to a gold crown suspected of being fraudulently alloyed with silver.