"actions speak louder than words! " is an old saying that refers to the fact that people's actions—how they act as opposed to what they say—are often testament to their true ethical values.

Yes the statement above is 'True".

People's actions show the true values and ethics they believe in. Usually people see others and based on their observations frame their own moral values instead of listening to others and following the speech.This shows that actions are the actual maker of someone's moral values. 

3. i would say one, but one is not prime nor composite.