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  5. Healthy scepticism is the basis of all accurate observation.

Healthy scepticism is the basis of all accurate observation.

Arthur Conan Doyle
Healthy, Skepticism, Observation
Sir Arthur Conan Doyle (2013). “Collected Works of Sir Arthur Conan Doyle (Delphi Classics)”, p.9809, Delphi Classics
Healthy scepticism is the basis of all accurate observation.