James Freeman Clarke

"It may make a difference to all eternity whether we do right or wrong today" James Freeman Clarke 

 I think this means that we need to do good all the time because then it make a difference all eternity. For example if you do wrong then it will make a difference forever. But if you do good then it will make a difference forever too but it will be a good difference. 

"Only those live who do good" - Count Leo Tolstoy 

I think this means to live life to the fullest and be nice and humble. And whoever does good is gonna live life to the best because they are choosing the right. For example if you don't invite your parents to your games then you are choosing the wrong and you are living in misery. but if you invite them then you will live in happiness and you have a happy life.