“It is only prudent never to place complete confidence in that by which we have even once been deceived.” TruthTrustLiesDeception Book:Meditations on First Philosophy Source: Meditations on First Philosophy
“The dreams we imagine when we are asleep should not in any way make us doubt the truth of the thoughts we have when we are awake.” TruthImaginationDreams Book:Discourse on Method and Meditations on First Philosophy Source: Discourse on Method and Meditations on First Philosophy
“I fully recognize that all certainty and truth in science depend only on a knowledge of the true God, so much so that, before I knew Him, I could have no perfect knowledge of anything else. But now I am able to understand innumerable things completely and clearly, about both God Himself and other intellectual matters, as well as about all those things in corporeal nature that are objects of study in pure mathematics.” GodTruthScienceKnowledgeMathematicsClarityImperfectionAbstract Thinking Book:Meditations on First Philosophy Source: Meditations on First Philosophy
“But because, in dealing with what we need to do, we cannot always take the time for such a scrupulous examination, we must concede that human life is often prone to error concerning particular things and that we need to acknowledge the frailty of our nature.” TruthHuman NatureMistakesBeing HumanError Book:Meditations on First Philosophy Source: Meditations on First Philosophy