“Creating simplicity often makes the heart leap; order has been restored, the crooked made straight. But order is understanding that things cannot be made simple, that complexity reigns and must be accepted.”

Source: The Gunslinger

Source: In Defense of Chaos: The Chaology of Politics, Economics and Human Action, (2013), p. 90

"For This I Have Laid Down My Life", p. 12
Unfinished Pilgrimage (1995)

Source: The Freedom of a Christian (1520), pp. 73-74

What Are Masterpieces and Why Are There So Few of Them (1936), Afterword of a later edition

Letter to (22 August 1774), as published in The Life of John Jay (1833) by William Jay, Vol. 2, p. 345.
1770s, Letter to Lindley Murray (1774)
Context: Among the strange things of this world, nothing seems more strange than that men pursuing happiness should knowingly quit the right and take a wrong road, and frequently do what their judgments neither approve nor prefer. Yet so is the fact; and this fact points strongly to the necessity of our being healed, or restored, or regenerated by a power more energetic than any of those which properly belong to the human mind.
We perceive that a great breach has been made in the moral and physical systems by the introduction of moral and physical evil; how or why, we know not; so, however, it is, and it certainly seems proper that this breach should be closed and order restored. For this purpose only one adequate plan has ever appeared in the world, and that is the Christian dispensation. In this plan I have full faith. Man, in his present state, appears to be a degraded creature; his best gold is mixed with dross, and his best motives are very far from being pure and free from earth and impurity.

Part IV, Ch. 3
Religion and the Rise of Capitalism (1926)

Source: The Outsider (1956), Chapter Three, The Romantic Outsider

Statements after the Solvay Conference of 1927, as quoted in Physics and Beyond (1971) http://www.edge.org/conversation/science-and-religion by Werner Heisenberg
Context: At the dawn of religion, all the knowledge of a particular community fitted into a spiritual framework, based largely on religious values and ideas. The spiritual framework itself had to be within the grasp of the simplest member of the community, even if its parables and images conveyed no more than the vaguest hint as to their underlying values and ideas. But if he himself is to live by these values, the average man has to be convinced that the spiritual framework embraces the entire wisdom of his society. For "believing" does not to him mean "taking for granted," but rather "trusting in the guidance" of accepted values. That is why society is in such danger whenever fresh knowledge threatens to explode the old spiritual forms. The complete separation of knowledge and faith can at best be an emergency measure, afford some temporary relief. In western culture, for instance, we may well reach the point in the not too distant future where the parables and images of the old religions will have lost their persuasive force even for the average person; when that happens, I am afraid that all the old ethics will collapse like a house of cards and that unimaginable horrors will be perpetrated. In brief, I cannot really endorse Planck's philosophy, even if it is logically valid and even though I respect the human attitudes to which it gives rise.
Einstein's conception is closer to mine. His God is somehow involved in the immutable laws of nature. Einstein has a feeling for the central order of things. He can detect it in the simplicity of natural laws. We may take it that he felt this simplicity very strongly and directly during his discovery of the theory of relativity. Admittedly, this is a far cry from the contents of religion. I don't believe Einstein is tied to any religious tradition, and I rather think the idea of a personal God is entirely foreign to him. But as far as he is concerned there is no split between science and religion: the central order is part of the subjective as well as the objective realm, and this strikes me as being a far better starting point.