Principles are what people have instead of God.
To be a Christian means among other things to be willing if necessary to sacrifice even your highest principles for God's or your neighbour's sake the way a Christian pacifist must be willing to pick up a baseball bat if there's no other way to stop a man from savagely beating a child.
Jesus didn't forgive his executioners on principle but because in some unimaginable way he was able to love them.
'Principle' is an even duller word than 'Religion'.

We must be convinced that there are no such things as 'Christian principles.' There is the Person of Christ, who is the principle of everything. But if we wish to be faithful to Him, we cannot dream of reducing Christianity to it certain number of principles (though this is often done), the consequences of which can be logically deduced. This tendency to transform the work of the Living God into a philosophical doctrine is the constant temptation of theologians, and also of the faithful, and their greatest disloyalty when they transform the action of the Spirit which brings forth fruit in themselves into an ethic, a new law, into 'principles' which only have to be 'applied.

I live by certain guiding principles, the things I cannot do openly, I will not do in private. I live by the principle of selfless leadership, service and integrity.

We have come to believe in God's love: in these words the Christian can express the fundamental decision of his life. Being Christian is not the result of an ethical choice or a lofty idea, but the encounter with an event, a person, which gives life a new horizon and a decisive direction.

An exemplary Christian life, charitable love of our neighbour, and our weak or suffering brethren, the fear of God, loyalty to king and love of country—these are virtues to be practised, and these are the arms to which God will give the victory.

Remember! — It is Christianity to do good always — even to those who do evil to us. It is Christianity to love our neighbours as ourself, and to do to all men as we would have them do to us. It is Christianity to be gentle, merciful and forgiving, and to keep those qualities quiet in our own hearts, and never make a boast of them or of our prayers or of our love of God, but always to show that we love Him by humbly trying to do right in everything. If we do this, and remember the life and lessons of Our Lord Jesus Christ, and try to act up to them, we may confidently hope that God will forgive us our sins and mistakes, and enable us to live and die in peace.

The Christian way is a life of faith. In order to hold on to the promises of God, you’ve got to believe them and live by them.

If everyone assumes their responsibilities, and we live Christian values coherently day by day.

To be a Christian is to live dangerously, honestly, freely - to step in the name of love as if you may land on nothing, yet to keep on stepping because the something that sustains you no empire can give you and no empire can take away.

So that Christianity is so far from leaving us to live in the common ways of life, conforming to the folly of customs, and gratifying the passions and tempers which the spirit of the world delights in, it is so far from indulging us in any of these things, that all its virtues which it makes necessary to salvation are only so many ways of living above and contrary to the world, in all the common actions of our life. If our common life is not a common course of humility, self-denial, renunciation of the world, poverty of spirit, and heavenly affection, we do not live the lives of Christians.

Consider that as a principle of love is the main principle in the heart of a real Christian, so the labor of love, is the main business of the Christian life.

Let us be blunt, even at the risk of being misunderstood: the true Christian is not the denominational party member but he who through being a Christian has become truly human; not he who slavishly observes a system of norms, thinking as he does so only of himself, but he who has become freed to simple human goodness. Of course, the principle of love, if it is to be genuine, includes faith. Only thus does it remain what it is. For without faith, which we have come to understand as a term expressing man’s ultimate need to receive and the inadequacy of all personal achievement, love becomes an arbitrary deed. It cancels itself out and becomes self-righteousness: faith and love condition and demand each other reciprocally. Similarly, in the principle of love there is also present the principle of hope, which looks beyond the moment and its isolation and seeks the whole. Thus our reflections finally lead of their own accord to the words in which Paul named the main supporting pillars of Christianity: “So faith, hope, love abide, these three; but the greatest of these is love” (1 Cor 13:13).

To practice faith is to live day to day.

I live my life based on 2 principles. One, I live as if today was my last day on earth. Two, I live today as if I am going to live forever.