They say actions speak louder than words, however, when we consider an Islamic life sometimes the words of a person seem to be of use for us too. It may be the case that a person's words give us a hint in solving a problem or finding a new way in our lives, even if we are sure that he/she would not act based on his/her own words. So, we can say that first listen and then decide if that words are worthy of your time and attention and would take a step further in your life.
Imam Bagher (AS) said: "Benefit from the valuable and useful comments of anyone, even if they are not committed to them."