“Goodness is the only investment that never fails”- Henry David Thoreau

This quote is saying that doing good never fails no matter what you do because you could do good wherever you are and whenever you want. As long as you invest your time in it that is what matters.  If you invest your time in something that is going to do good you or to other people then you should do a good job on it and put effort into it. If you choose to invest your time in good stuff then you are doing something right and good for yourself. Being good is always going to be a good thing if you make it a good thing. If you want something to be good but you don't put the time and effort to make it right then it won’t benefit you. You have to try to make stuff good otherwise no one will do it for you. For example, if you are trying to do something nice for your friends birthday but you wait until last minute to do it then your plan won’t turn out as well as you wanted it. You weren't being or doing something good to make it good, you did it but you didn’t put time in it so it could turn out the right way. It’s always best to invest your time and energy in the good stuff that way you know what’s good and what’s wrong.

“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.

"When i do good, I feel bad. When i do bad, I feel bad''

This quote is saying that what you do explains how you are going to feel. What you do, whether its good or bad is going to make you feel good or bad.Some people do bad stuff and then later on they feel bad because of what they did. Or some people do good stuff and feel good about themselves. Whatever you do is going to express how you feel. Everyone will make mistakes or do good things to make someone else and their own selves feel either good or bad. If you choose something good then something good will come back to you. If you do something bad then something bad will come to you. It could maybe be a person you didn't like that you got in a argument but you went to apologize because you didn't feel good about all the stuff you said. Or you can steal from someone and then feel bad because it wasn't worth it.