پیشگیری شرط عقل
An ounce of discretion is worth a pound of wit
An ounce of prevention (is worth a pound of cure)
(یک ذره پیشگیری بهتر از یک عالمه درمان است)
Prevention is better than cure
used to say that it is better to prevent a problem before it happens than to try to solve it after it has happened.