There are no foolish trades, there are only foolish people.
More French Proverbs:
God save me from those I trust in.French
Don't make an oven of your cap or a garden of your belly.
French
A Rowland for an Oliver.
French
An ass does not stumble twice over the same stone.
French
Better a slip of the foot than of the tongue.
French
Every one says: My right is good.
French