(source)
Give a man a fish and he will eat for a day, teach a man to fish and he will spend all day in a boat drinking beer. George Carlin
Another variation:
Give a man a gun and he can rob a bank. Give a man a bank and he can rob the world.
The latter being a references to recent bank bailouts.
The original is, of course, “give a man a fish and you feed him for a day. teach a man to fish and you feed him for a lifetime”. More on development aid.
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Here’s another one for you based on the same:
Give a man a fish and he will eat for a day.
Teach him how to fish, and he will eat for a lifetime,
Teach a man to sell fish and he eats Steak