The Neanderthal Man (1953)

Robert Shayne: Prof. Clifford Groves

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Quotes 

• Prof. Clifford Groves : [Angry at skeptical scientists hearing his lecture]  Let me assume you, for want of your own understanding, that man's boasting pride in his alleged advancement is based on one hollow precept that is his ego.

• Prof. Clifford Groves : The world's gone completely mad. Sometimes I think I'm the only rational being left in it... one person telling a fairy tale and the other one believing it.

• Prof. Clifford Groves : You have no vision, only sight!

• Prof. Clifford Groves : I'll give you proof! I'll show you proof such as no man has ever had!