HE WHO HESITATES IS LOST

I am an international student here in the USA and I would like to understand what the phrase "HE WHO HESITATES IS LOST" means.

Thank you in advance.

Aman

What gives? Two of you? "He who hesitates is lost" is a pretty transparent expression. It means that if you react too slowly to situations, especially urgent ones, you'll die, get hit, lose a good opportunity, lose the girl, fail to make the grade. "Lost" is deliberately a bit vague. It does NOT mean here, unable to find one's way home.