Student: Master you did say that one must not think twice when a chance come in front of our eyes, didn't you?
Master: Yes, indeed I said it clearly to you.
Student: So whats wrong with me, so I get this stupid luck when I do what you've told me?t
Master: No my child, you aren't wrong at all. But I didn't mention not to think at all as well, didn't I?
Ah..., then the pupil leave his master when a red face...