Experience is not what happens to you; it is what you do with what happens to you. -- Aldous Huxley
The wisdom that enables us to recognize as an undesirable old acquaintance the folly that we have already embraced.
To one who, journeying through night and fog,
Is mired neck-deep in an unwholesome bog,
Experience, like the rising of the dawn,
Reveals the path that he should not have gone.
-- Joel Frad Bink
The Devil's Dictionary