Related:

• Those who can, do. Those who can't, teach. Those who can't teach, administrate.
  Those who can't administrate, consult. Those who can't consult, run for political office....
• The man who believes he can do it is probably right. -- Helvetiu
• How do they get the deer to cross right at the sign?
• Those who can, do. Those that can't criticize.
• Buy a IBM. It can do SOMETHING right.
• Buy a Mac. It can do SOMETHING right.
• Those who can, do; those who can't, simulate.
• Those who can, do. Those who can't, get promoted to management.
• Those who can, do. Those who can't, supervise!