Quotes of Demonstrable

“ One's own independent judgment is the means by which one must choose one's actions, but it is not a moral criterion nor a moral validation; only reference to a demonstrable principle can validate one's choices. ”

- Ayn Rand

“ The influence of prayer on the human mind and body is as demonstrable as that of secreting glands. Its results can be measured in terms of increased physical buoyancy, greater intellectual vigor, moral stamina, and a deeper understanding of the realities underlying human relationships. ”

- Alexis Carrel

“ A man should remind himself that an object of faith is not scientifically demonstrable, lest presuming to demonstrate what is of faith, he should produce inconclusive reasons and offer occasion for unbelievers to scoff at a faith based on such ground. ”

- Saint Thomas Aquinas
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