“They’re only truly great who are truly good.”

This quote is saying that only if you are a good person you are a great person. If you are a good person the other people must like you because of the way you are. People like to see nice people and like to see others respected just like how they want to be respected. If you want to be a great person then you have to earn to be a good person otherwise you will think you are a great person but maybe you’re really not. Those who are willing to help and be kind to other people are good people. Those are considered good people because they want to see everyone be happy and be kind to others. If you are one of those then you are doing good, you’re treating others like how you want to be treated. For example if you say  you are going to go to the market for your mom to get what she needs for she won't have to go but later you decide not to go because you didn’t feel like it, that’s not being a good person. In order to feel like you did something right you have to do what was going to be right. Just because you said it doesn't mean you are a good person.