Healthy scepticism is the ...

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

Quotes from the same author

It has long been an axiom of mine that the little things are infinitely the most important.
Mediocrity knows nothing higher than itself, but talent instantly recognizes genius.
Whenever you have eliminated the impossible, whatever remains, however improbable, must be the truth.
It is, I admit, mere imagination; but how often is imagination the mother of truth?
Skill is fine, and genius is splendid, but the right contacts are more valuable than either.