I don't see why not. One of the best things to come out of Jesus' teachings was the "love thy neighbour". And to be honest, I have always felt that particular teaching best reflects what human kind should be doing - loving everyone. Not just family, close friends etc ... But everyone and everything.
If you can see a good philosophy in something - be it in Christian, Hindu, Islamic, whatever, or not even tied into religion at all, but something you feel is perfect for you - then by all means, incorporate that into your own life philosophies, your own thoughts and beliefs. Being Pagan does not mean you cannot believe any other teaching/philosophy of anyone else in the world who is not of a Pagan faith. Being Pagan is more about acceptance, tolerance, patience, love, kindness, respect, understanding. You are free to choose your own path, and live it as you see fit.
~ The mystery of love is greater than the mystery of death ~