'Neighbour' in the Bible

And he answering said, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy strength, and with all thy mind; and thy neighbour as thyself.

But he, willing to justify himself, said unto Jesus, And who is my neighbour?

Which now of these three, thinkest thou, was neighbour unto him that fell among the thieves?