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Except our own thoughts, there is nothing absolutely in our power.

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Let whoever can do so deceive me, he will never bring it about that I am nothing, so long as I continue to think I am something.

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I suppose therefore that all things I see are illusions; I believe that nothing has ever existed of everything my lying memory tells me. I think I hav...more

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although we very clearly see the sun, we ought not therefore to determine that it is only of the size which our sense of sight presents; and we may ve...more

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I revered our theology, and aspired as much as any one to reach heaven: but being given assuredly to understand that the way is not less open to the m...more

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For, occupied incessantly with the consideration of the limits prescribed to their power by nature, they [philosophers of former times] became so enti...more

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Some years ago I was struck by the large number of falsehoods that I had accepted as true in my childhood, and by the highly doubtful nature of the wh...more

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Gratitude is a species of love, excited in us by some action of the person for whom we have it, and by which we believe that he has done some good to ...more

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...we ought not meanwhile to make use of doubt in the conduct of life.

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...we ought also to consider as false all that is doubtful.

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I desire to live in peace and to continue the life I have begun under the motto 'to live well you must live unseen