The Writing Workshop

There was a man. He was going back to his office. He was passing a group of people in the street. He heard a few words of what they were saying. He suddenly stopped to move. He looked at those people in a way that showed that maybe he wanted to say something to them, but he decided not to do it because it was not a good idea. He ran quickly to the other side of the road. He went quickly to his office. He sharply told his secretary not to interrupt what he was going to do. He quickly and firmly took hold of the phone. He almost finished dialing but at that moment his decision changed. He put receiver back down and moved his hand slowly over his moustache, thinking… No, he was not acting in a wise way.

This is not a very well-written text, is it? Firstly, it contains two mistakes, and secondly, the structure and the choice of words and expressions are not good at all. In fact, this text needs a complete shake-up; it has to be rewritten all over!
Rewrite the text making any changes you find necessary to correct and improve it.