Across families

Roman Catholicism and Zoroastrianism

Different families with 10 axes in close agreement — the sort of pairing a quiz weighting only the divine axes would never surface. Mean distance across all seventeen axes: 0.16 (0 would be identical).

Roman CatholicismChristianity

A personal, transcendent God known through revelation and reason together, mediated by a sacramental church with teaching authority. Humanity is wounded and rescued by grace, which reaches people through sacraments rather than around them.

ZoroastrianismAbrahamic-adjacent

A wholly good creator, a real opposing principle, and a cosmos that will be made whole at the end — with human beings as free participants who decide the outcome by what they think, say and do. Matter is good, asceticism is rejected, and the elements are kept ritually pure.

Where they agree

  • A1 Divine reality

    Both sit at a divine reality certainly exists — a gap of 0.00.

  • C1 Survival of the self

    Both sit at continues in some form — a gap of 0.00.

  • E1 Exclusivity

    Both sit at leaning one true path — a gap of 0.00.

  • D2 Centrality of ritual

    Both sit at essential and prescribed — a gap of 0.03.

  • C2 Shape of time

    Both sit at one life, then judgment — a gap of 0.03.

  • E2 Origin of the cosmos

    Both sit at an intentional act — a gap of 0.03.

  • A3 Plurality

    Both sit at leaning strictly one — a gap of 0.05.

  • B2 Reading of sacred text

    Both sit at leaning literal and binding — a gap of 0.05.

  • A2 Personhood

    Both sit at a personal being one can address — a gap of 0.07.

  • B1 Source of truth

    Both sit at revealed and fixed and leaning revealed and fixed respectively — a gap of 0.10.

Where they part company

  • D1 Mechanism of the ultimate good

    Roman Catholicism: leaning given as grace. Zoroastrianism: leaning achieved by effort or insight. A gap of 0.62 on an axis running from “given as grace” to “achieved by effort or insight”.

  • C3 The human condition

    Roman Catholicism: fallen and in need of rescue. Zoroastrianism: between fallen and in need of rescue and ignorant but fundamentally sound. A gap of 0.47 on an axis running from “fallen and in need of rescue” to “ignorant but fundamentally sound”.

All seventeen axes

AxisRoman CatholicismZoroastrianismGap
A1 Divine realitya divine reality certainly existsa divine reality certainly exists0.00
A2 Personhooda personal being one can addressa personal being one can address0.07
A3 Pluralityleaning strictly oneleaning strictly one0.05
A4 Locusbetween wholly beyond the world and fully present within itbetween wholly beyond the world and fully present within it0.13
B1 Source of truthrevealed and fixedleaning revealed and fixed0.10
B2 Reading of sacred textleaning literal and bindingleaning literal and binding0.05
B3 Institutional authorityclergy and tradition decideleaning clergy and tradition decide0.20
C1 Survival of the selfcontinues in some formcontinues in some form0.00
C2 Shape of timeone life, then judgmentone life, then judgment0.03
C3 The human conditionfallen and in need of rescuebetween fallen and in need of rescue and ignorant but fundamentally sound0.47
D1 Mechanism of the ultimate goodleaning given as graceleaning achieved by effort or insight0.62
D2 Centrality of ritualessential and prescribedessential and prescribed0.03
D3 The bodyleaning to be disciplinedbetween to be disciplined and to be celebrated0.27
E1 Exclusivityleaning one true pathleaning one true path0.00
E2 Origin of the cosmosan intentional actan intentional act0.03
E3 Locus of belongingbetween a people, inherited and an individual choicea people, inherited0.37
E4 Standing of naturebetween creation, given for use and animate and itself sacredleaning animate and itself sacred0.38

Positions for Roman Catholicism rest principally on Catechism of the Catholic Church (2nd ed., 1997); for Zoroastrianism, on Avesta, the Gathas, and the Denkard. Per-cell sources are listed on each tradition’s own page.

Which of the two is closer to you?

The questionnaire places your answers on these same axes and ranks all 65 traditions by how closely they match. Take it.