Every problem has a quick and attractive solution, but that solution is often not the right one.

That is to say: a solution that is too easy for a difficult problem is unreliable.

e.g

A said: i'm bankrupt, and if i can't pay the rent this month, i'll be thrown onto the street! but if i go and rob the bank, all my problems will be solved!

b said: that's wrong, remember: For every problem, there is always a solution, which is so quick, so appealing, and so wrong.

robbing a bank to pay for the rent is like that.