More quotes by Arthur C. Clarke
Space can be mapped and crossed and occupied without definable limit; but it can never be conquered.
The greatest tragedy in mankind's entire history may be the hijacking of morality by religion.
Human judges can show mercy. But against the laws of nature, there is no appeal.
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Optimism is the faith that leads to achievement; nothing can be done without hope.
Always believe in your dreams, because if you don't, you'll still have hope.
Attribution
Quote text and notes from Wikiquote: Arthur C. Clarke (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.