“Whenever the time of each prayer arrives, an Angel announces to the people: (O’ People!) Stand up and extinguish, with prayers, the fire which you have set alight for yourselves.”

R.U.R. (1920)

Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 473.

Wartime Prayers
Song lyrics, Surprise (2006)
Context: Prayers offered in times of peace are silent conversations,
Appeals for love, or love's release, in private invocationsBut all that is changed now.
Gone like a memory from the day before the fires.
People hungry for the voice of God
Hear lunatics and liars.Wartime prayers. Wartime prayers
In every language spoken.
For every family scattered and broken.

Cool my brow, ancient night! Divine and fair as you always were — O night, what purpose do you serve? There are no lovers, no dreams. O nursemaid, dead as a sleep without dreams, you no longer hallow anyone's prayers. O mother of us all, you don't bless a single heart smitten with love. There is no love.
R.U.R. (1920)

Writing for the court, Engel v. Vitale, 370 U.S. 421 (1962).
Context: Our Founders were no more willing to let the content of their prayers and their privilege of praying whenever they pleased be influenced by the ballot box than they were to let these vital matters of personal conscience depend upon the succession of monarchs. The First Amendment was added to the Constitution to stand as a guarantee that neither the power nor the prestige of the Federal Government would be used to control, support or influence the kinds of prayer the American people can say -- that the people's religions must not be subjected to the pressures of government for change each time a new political administration is elected to office. Under that Amendment's prohibition against governmental establishment of religion, as reinforced by the provisions of the Fourteenth Amendment, government in this country, be it state or federal, is without power to prescribe by law any particular form of prayer which is to be used as an official prayer in carrying on any program of governmentally sponsored religious activity.

The Writings of Marguerite Bourgeoys, p. 204

Too Busy Not to Pray (2008, InterVarsity Press)

a
Ja‘far ibn Muhammad ibn Qulawayh, Kāmil al-Ziyarat, ch.42, p. 393
Religous Wisdom

Romans 10:1
An Alarm to Unconverted Sinners: A Serious Treatise, Joseph Alleine, Kindle location 140.
An Alarm to the Unconverted aka A Sure Guide to Heaven (first published 1671)