Jesus taught that the mark of the Christian is the observable love shown among all true believers.
Francis SchaefferChristianity is realistic because it says that if there is no truth, there is also no hope; and there can be no truth if there is no adequate base. It is prepared to face the consequences of being proved false and say with Paul: If you find the body of Christ, the discussion is finished, let us eat and drink for tomorrow we die. It leaves absolutely no room for a romantic answer.
Francis SchaefferMan is indeed lost, but that does not mean that he is nothing. We must resist humanism, but to make a man a zero is not the right way to resist it ... [The] Christian position is that man is made in the image of God and even though he is now a sinner, he can do things that are tremendous - he can influence history for this life and the life to come, for himself and for others...From the biblical viewpoint, man is lost, but great.
Francis SchaefferAll men bear the image of God. They have value not because they are redeemed, but because they are God's creation in God's image.
Francis Schaeffer