If the human brain were so simple that we could understand it, we would be so simple that we couldn't.

If the human mind was simple enough to understand, we'd be too simple to understand it.

When people's faith in the collective intelligence increases, falls to the same extent their own individual sense of responsibility.

One definition of man is ''an intelligence served by organs.''

If we encounter a man of rare intellect, we should ask him what books he reads.

To lack intelligence is to be in the ring blindfolded.