I am writing a paragraph on goals.
Based on the quote "Those who attain any excellence commonly spend life in one persuit; for excellence is not often gained upon easier terms."
Can you give me advice on an introduction to start with on this quote before writing.
Example: In persuit of a desired goal one may wish to refer to the wisdom of that quote.
It is a little hard to tell what you are asking for. If you simply need an introductory sentence, it sounds like you have a pretty good idea that just needs a little tweaking. Two things I would consider. First of all, will you be writing about your personal goals within this paragraph? If yes, then don't be afraid to go ahead and open the paragraph with a personal statement (ie: get rid of the use of "one" and substitute "I.") Second, if you haven't yet stated the quote, you are going to need to give a direction as to where it is. I would not make the quote a title.
I think you could tweak what you have to say something like, "I like to think that someday I will look back on my life and consider what I have done excellent. In order to do this, I plan to keep in mind the wisdom from this quote: "..."
If this is to be an entire essay on the persuit of goals, rather than just a paragraph, I encourage you to brainstorm the meat of your essay before writing your introduction. The best introductions often come after fully outlining (and possibly writing) the body paragraphs. The first sentence, remember, is a hook. It is a throwaway sentence that gets the reader interested. Perhaps the quote itself is your opening sentence. The rest of your introduction then will contain your thesis (the foundation of your paper) and sub-points you will cover (the body paragraph topics). This is always easier to do once you've fully planned the rest of the essay in some detail.