A moment's insight is sometimes worth a life's experience.

Related:

• No generalization is worth a damn...including this one.
  Oliver Wendell Holmes (1809...
• Give us the luxuries of life and we will dispense with the necessities.
  Oliver Wendell...
• As life is action and passion, it is required of a man that he should share the passion and action of his time,
  at the peril of being not to have lived. -- Oliver...
• Every calling is great when greatly pursued. --
  Oliver Wendell Holmes, Jr...
• Humility is the first of the virtues -- for other people.
  Oliver Wendell...
• Insanity is often the logic of an accurate mind overtaxed.
  Oliver Wendell...
• It is the province of knowledge to speak And it is the privilege of wisdom to listen.
  Oliver Wendell...
• Love is the master key which opens the gates of happiness.
  Oliver Wendell...
• No generalization is wholly true, not even this one.
  Oliver Wendell Holmes jr...