In the first sentence, the "he" is a nominative as it is a subject. 
In the second sentence it is an object as the form "me" is actually "I", but "i" is a nominative form and "me" is an objective form.
In the third sentence "Us" is also used in objective form as "us" is an object of an action by "my sister".
        
                    
             
        
        
        
Answer:
Believe in yourself instead of conforming to the values of others.
Explanation:
Philosopher Ralph Waldo Emerson in his essay "Self Reliance" argue about the effect of polite society on an individual's personal growth. Only self sufficiency is capable of providing freedom to an individual in discovering their true self and worth, bringing forth true independence on the individual.
He emphasized on the importance of an individual to follow their own voices rather than trying to conform to the dictates and values set by the society. He posits the issue of self reliance in oneself and the importance of the imaginary thinking capacity of an individual. He also argues that the most important realization for an individual is trusting himself. He promotes self reliance as an ideal virtue for everyone. "Believe in yourself instead of conforming to the values of others" best sums up the passage provided in the question.
 
        
             
        
        
        
Walk away
Tell them to stop 
Or tell someone
        
                    
             
        
        
        
What do you need help on?
 
        
             
        
        
        
I think the second one is wrong