Corruption, the most infallible symptom of constitutional liberty.

-Gibbon, Edward
^88  The Decline and Fall of the Roman Empire, ch.21.

Le premier sympto"  me de l'amour vrai chez un jeune homme, c'est la timidite¤  , chez une jeune fille, c'est la hardiesse. The first symptom of true love in a young man istimidity; in a young woman, it is boldness.

-Hugo,Victor Marie
  Les Mise¤  rables, vol.4, bk.3, ch.6.

Extreme busyness, whether at school or college, kirk or market, is a symptom of a deficient vitality; and a faculty for idleness implies a catholic appetite and a strong sense of personal identity.

-Stevenson, Robert Louis
Virginibus Puerisque,'An Apology for Idlers'.

The desire to make money is a symptom of all sorts of emotional disturbancesögreed is only one of them.

-van deWetering,Janwillem
  The Maine Massacre.