Dear Piu:
My answer: Emotions make us weak if they are too intense- then we need to get calm (lower intensity) before making decisions. Emotions make us week if we try to push them down and away from our awareness, that is if we try to not feel them. Emotions make us weak if we automatically react to them in destructive ways.
On the other hand, emotions make us strong if we regulate their intensity, keep them in awareness long enough to learn the message in each emotion. Without learning the valid messages emotions carry with them, we have no way of knowing, really knowing, what to choose, how to live our lives.
anita