Can someone please tell me the differences in the following statements?

Almost the same concept.

The Wiccan "And it harm none" rule focuses on not harming people as the bottom line. The "Do unto others" includes that but also talks about doing good, helping when you can, since that is what you would want from others.

Do unto others is more of an outward acting statement. Help the guy with flat tire because you would want to be helped.

The second seems to be a more selfish thing. Why help the guy with a flat tire? It won't hurt him if you keep going.

Do unto others as you would have them do unto you- this simply means that what you do to others will be returned in kind to you. If you are mean, others will be mean to you. If you are kind, others will be kind. etc etc.

And it harm none, do as ye will- Do whatever you want as long as people consent (if it involves others) or can cause no harm to them.

the first one is doing things to others as you'd like to have done to you.

the second is do whatever you want as long as others aren't harmed. the first you are actively doing nice things to others. the second you are passively not doing mean things to others.

the first is the golden rule. the second is more libertarian. kind of like, "if there is no victim, there is no crime."

they are really the same.