Certain

Sometimes you’re certain that something is so, So sure of yourself that you’d bet, But if it turns out what you thought you did know Isn’t true, you’re in somebody’s debt. For the mind can play tricks and can make you believe That you did what you meant to, instead Of not carrying through what you’d hoped to achieve When you thought up those plans in your head. Thus it’s better to hedge and admit that you think You accomplished your goal, but of course, State it’s possible that, in the time of a blink, You did not - and prevent a divorce.