What does it mean to have more potential than you know?

If you had known me, you would have known my Father also; henceforth you know him and have seen him." Philip said to him, "Lord, show us the Father, and we shall be satisfied." Jesus said to him, "Have I been with you so long, and yet you do not know me, Philip? He who has seen me has seen the Father; how can you say, `Show us the Father'? Do you not believe that I am in the Father and the Father in me? The words that I say to you I do not speak on my own authority; but the Father who dwells in me does his works. Believe me that I am in the Father and the Father in me; or else believe me for the sake of the works themselves. "Truly, truly, I say to you, he who believes in me will also do the works that I do; and greater works than these will he do, because I go to the Father. Whatever you ask in my name, I will do it, that the Father may be glorified in the Son; if you ask anything in my name, I will do it.