Source: A Monk in the World: Cultivating a Spiritual Life (2003), p. 1
“Finally, and of central importance, the special life of the saint—fully separate from the "natural" life of wants and desires—could no longer play itself out in monastic communities set apart from the world. Rather, the devoutly religious must now live saintly lives in the world and amid its mundane affairs. This rationalization of the conduct of life—now in the world yet still oriented to the supernatural—was the effect of ascetic Protestantism’s concept of the calling.”
Source: The Protestant Ethic and the Spirit of Capitalism (1905; 1920), Ch. 4 : The Religious Foundations of This-Wordly Asceticism
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Max Weber 41
German sociologist, philosopher, and political economist 1864–1920Related quotes

Kulturphilosophie (1923), Vol. 2 : Civilization and Ethics
Context: Affirmation of the world, which means affirmation of the will-to-live that manifests itself around me, is only possible if I devote myself to other life. From an inner necessity, I exert myself in producing values and practising ethics in the world and on the world even though I do not understand the meaning of the world. For in world- and life-affirmation and in ethics I carry out the will of the universal will-to-live which reveals itself in me. I live my life in God, in the mysterious divine personality which I do not know as such in the world, but only experience as mysterious Will within myself.
Rational thinking which is free from assumptions ends therefore in mysticism. To relate oneself in the spirit of reverence for life to the multiform manifestations of the will-to-live which together constitute the world is ethical mysticism. All profound world-view is mysticism, the essence of which is just this: that out of my unsophisticated and naïve existence in the world there comes, as a result of thought about self and the world, spiritual self-devotion to the mysterious infinite Will which is continuously manifested in the universe.

The Tragic Sense of Life (1913), III : The Hunger of Immortality
Source: A Monk in the World: Cultivating a Spiritual Life (2003), p. 8

" The Radical Plan to Phase out Earth's Predatory Species https://io9.gizmodo.com/the-radical-plan-to-eliminate-earths-predatory-species-1613342963", io9, 30 Jul. 2014

As quoted in An Organic Architecture (1970)
Source: This Law of Ours and Other Essays (1987), Chapter: Answers of Islam, Answer to Question # 24, p 165