---
title: "Meaning & Key Takeaway of: Some care is needed in using Descartes'…"
description: "\"Some care is needed in using Descartes' argument. \"I think, therefore I am\" says rather more than is strictly certain. It might seem as though we are q..."
image: "https://sms4smile.com/quotes/i/13a/bertrand-russell-69_argument_some-care-is-needed-in-using-descartes-a_2728238.jpg"
---

#  Some care is needed in using Descartes' argument. "I…

![“Some care is needed in using Descartes' argument. &quot;I think, therefore I am&quot; says rather more than is strictly certain. It might seem as though we are quite sure of being the same person to-day as we were yesterday, and this is no doubt true in some sense. But the real Self is as hard to arrive at…” quote by Bertrand Russell](https://sms4smile.com/quotes/i/13a/bertrand-russell-69_argument_some-care-is-needed-in-using-descartes-a_2728238.jpg)   [Download](https://sms4smile.com/quotes/i/13a/bertrand-russell-69_argument_some-care-is-needed-in-using-descartes-a_2728238.jpg) [Open image](https://sms4smile.com/quotes/i/13a/bertrand-russell-69_argument_some-care-is-needed-in-using-descartes-a_2728238.jpg)

> “Some care is needed in using Descartes' argument. "I think, therefore I am" says rather more than is strictly certain. It might seem as though we are quite sure of being the same person to-day as we were yesterday, and this is no doubt true in some sense. But the real Self is as hard to arrive at as the real table, and does not seem to have that absolute, convincing certainty that belongs to particular experiences.”

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

## About This Quote

This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.

Descartes' claim "I think, therefore I am" suggests self‑existence but lacks absolute certainty; personal identity is more complex than a single logical statement.

**In simple terms:** Self‑existence is not absolutely certain.

Key Takeaway

Question identity beyond simple logic.

Themes

philosophy identity certainty logic

Mood

thoughtful inquisitive

Type

philosophical analytical

When to use this quote

- personal reflection
- academic debate
- ethical decision making

Key Concepts

Cartesian doubt self‑awareness

Questions to Reflect On

- How do you define your own identity?
- Can certainty be achieved without doubt?

A Different Perspective

The argument may overlook emotional and relational aspects of self.

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[Argument](https://sms4smile.com/quotes/about/argument/) [Care](https://sms4smile.com/quotes/about/care/) [Certainty](https://sms4smile.com/quotes/about/certainty/) [Descartes](https://sms4smile.com/quotes/about/descartes/) [Doubt](https://sms4smile.com/quotes/about/doubt/) [Identity](https://sms4smile.com/quotes/about/identity/) [Metaphysics](https://sms4smile.com/quotes/about/metaphysics/) [Real self](https://sms4smile.com/quotes/about/real-self/) [Self](https://sms4smile.com/quotes/about/self/) [Thinking](https://sms4smile.com/quotes/about/thinking/) [Yesterday](https://sms4smile.com/quotes/about/yesterday/)

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