Things which matter most must never be at the mercy of things which matter least. 

~ Goethe

Substance is enduring, form is ephemeral. Failure to distinguish clearly between the two is ruinous. Success follows those adept at preserving the substance of the past by clothing it in the forms of the future. Preserve substance; modify form; know the difference. The closest thing to a law of nature in business is that form has an affinity for expense, while substance has an affinity for income.

~ Dee Hock