Truth, which is simple and one, admits of no variety.
Interpretation
Truth is absolute and does not change or exist in different forms.
Pope Leo I emphasizes the nature of truth as singular and unchanging, suggesting that true understanding is not subject to interpretation or variation. This reflects a philosophical perspective that values objective truth over subjective perceptions, asserting that there is an essence to truth that lies beyond personal or cultural differences.
In practice
During a lecture on ethics, one might quote this to emphasize the importance of pursuing absolute truth.
The faith of those who live their faith is a serene faith. What you long for will be given you; what you love will be yours for ever. Since it is by giving alms that everything is pure for you, you will also receive that blessing which is promised next by the Lord: the Godhead that no man has been able to see. In the inexpressible joy of this eternal vision, human nature will possess what eye has not seen or ear heard, what man's heart has never conceived.
The Church is a virgin, the bride of one Spouse, Who is Christ, and this Church does not allow herself to be violated by any error; so that, throughout the whole world there may be for us one uncorruptedness of a single chaste communion.
No one, however weak, is denied a share in the victory of the cross. No one is beyond the help of the prayer of Christ.
The devil is always discovering something novel against the truth.
David's Lord was made David's Son, and from the fruit of the promised branch sprang One without fault, the two-fold nature coming together in one Person, that by one and the same conception and birth might spring our Lord Jesus Christ, in Whom was present both true Godhead for the performance of mighty works and true Manhood for the endurance of sufferings.
Teach nothing new, but instill into all men's breasts those things which the Fathers of revered memory have with harmony of statement taught... Preach nothing else than what we received from our forefathers... Accordingly, both in the rule of faith and in the observance of discipline, let the standard of antiquity be maintained throughout.
Neither individuals nor corporations have any right to come into court and ask that the clock of history be stopped, or turned back.
Recognition of the inevitability of comprehensive bureaucratization does not solve the problems that arise out of it.
I prefer the most unfair peace to the most righteous war.
We ask only that the law shall work alike on all men.
Justice is a temporary thing that must at last come to an end; but the conscience is eternal and will never die.
When we consider that women are treated as property it is degrading to women that we should treat our children as property to be disposed of as we see fit.
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