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• Be careful what you take with you into your old age.
• Be careful when throwing a boomerang - you might hit the back of your head.
• Be careful when you bite into your hamburger. -- Derek Bok
• Be careful what you set your heart upon - for it will surely be yours. BALDWIN
• You will always be successful in your business or professional career.
• If you can't be good, be careful.
• Another person's secret is like another person's money
  you are not as careful with it as you are with your own. -- E.W. Howe...
• Be careful what you set your heart upon - for it will surely be yours.
  -- James Baldwin, "Nobody Knows My Name" 1961...