“The glory of nature provides evidence that God exists”

The Purpose of Life, p. 53
The Purpose Driven Life: What on Earth Am I Here For? (2002)

Literary and Historical Miscellanies (1855), The Necessity, the Reality, and the Promise of the Progress of the Human Race (1854)
Context: The glory of God is not contingent on man's good will, but all existence subserves his purposes. The system of the universe is as a celestial poem, whose beauty is from all eternity, and must not be marred by human interpolations. Things proceed as they were ordered, in their nice, and well-adjusted, and perfect harmony; so that as the hand of the skilful artist gathers music from the harp-strings, history calls it forth from the well-tuned chords of time. Not that this harmony can be heard during the tumult of action. Philosophy comes after events, and gives the reason of them, and describes the nature of their results. The great mind of collective man may, one day, so improve in self-consciousness as to interpret the present and foretell the future; but as yet, the end of what is now happening, though we ourselves partake in it, seems to fall out by chance. All is nevertheless one whole; individuals, families, peoples, the race, march in accord with the Divine will; and when any part of the destiny of humanity is fulfilled, we see the ways of Providence vindicated. The antagonisms of imperfect matter and the perfect idea, of liberty and necessary law, become reconciled. What seemed irrational confusion, appears as the web woven by light, liberty and love. But this is not perceived till a great act in the drama of life is finished. The prayer of the patriarch, when he desired to behold the Divinity face to face, was denied; but he was able to catch a glimpse of Jehovah, after He had passed by; and so it fares with our search for Him in the wrestlings of the world. It is when the hour of conflict is over, that history comes to a right understanding of the strife, and is ready to exclaim: "Lo! God is here, and we knew it not."

Source: Faith vs. Fact (2015), p. 95

Lachesis Lapponica: Or, A Tour in Laplan http://books.google.es/books?id=vQ5XAAAAMAAJ&printsec=frontcover&hl=es#v=onepage&q&f=false (1811), translated by James Edward Smith, Lulea, p. 238.

Ostrom. 2014. Choice, Rules and Collective Action: The Ostrom's on the Study of Institutions and Governance. ECPR Press. Chapter 2: Polycentricty: The Structural Basis of Self-Governing Systems. p. 52
Context: The tensions inherent in the work of the scientific community are, however, exceptionally high because belief is potentially contestable. Inquiry in the scientific tradition represents, then, a challenge to every form of orthodoxy. Further, there is a danger that scientific investigators may abandon modesty, presume to know the Truth, and create their own form of orthodoxy, while engaging in sweeping rejections of other forms of belief and failing to pursue the merit of the arguments that may be at issue. Dogmas advanced in the name of science are no less dogmatic than other dogmas. Efforts to destroy or silence others is a manifestation of dominance strategies that are repugnant to polycentricty in scientific communities. A repudation of religion, as such, fails to indicate an appreaciation of those who teach that nature is the creation of a trascendent order. The study of nature as God's creation can provide scientific investigators with an appreciation for the existence of an order that gives coherence to all other forms of order. This is consistent with a presumption that a universe exists. Science as a polycentric order depends, then, upon an autonomous pursuit of inquiry that requires a reciprocal respect for the autonomy of others.

In the Introitus (Preface) from his late editions.
Original in Latin: "Finis Creationis telluris est gloria Dei ex opere Naturae per Hominem solum"
Variant translation: "The purpose of Creation is the glory of God, as can be seen from the works in nature by man alone."
Systema Naturae

As quoted in Calgary Sun (10 July 2007)

Google search of the second sentence, in quotes, yields a trio of 2019 books alone, most (there and in following) attributing it to Kepler—e.g., see Prof Basden's 2019 work, [Foundations and Practice of Research: Adventures with Dooyeweerd's Philosophy, The Complex Activity of Research [§10—4.1 Less-Obvious Pistic Functioning in Research], Advances in Research Methods, Abingdon-on-Thames, UK, Taylor & Francis-Routledge, 1st, 9781138720688, https://www.amazon.com/Foundations-Practice-Research-Adventures-Dooyeweerds/dp/1138720682, February 25, 2020] (page 222).
While most citations of Kepler have been traced back to a translation of an original work, this quotation appears broadly without any such sourcing (e.g., Basden). Where it is sourced, the sources are either spurious (e.g., to the "New World Encyclopedia", a Paragon House/Unification Church product https://www.nytimes.com/1984/04/02/arts/unification-church-is-starting-a-publishing-house.html, wherein it is likewise unsourced), or to such sources as Henry Morris' 1988 creationist work, [Men of Science, Men of God: Great Scientists Who Believed the Bible, Green Forest, AR, Master Books, 21st reprint, 9780890510803, https://www.amazon.com/Men-Science-God-Henry-Morris/dp/0890510806, February 25, 2020] (page 21f).
Until a scholarly source is found that ties these statements to an original text from Kepler, they formally must be considered unattributed to Kepler.
Disputed quotes

The Evolution of God. New York: Little, Brown and Company, 2009, p. 286.