See also: cogitò



cogito (usually uncountable, plural cogitos)

  1. (philosophy, often preceded by the, sometimes capitalized) The argument "cogito, ergo sum" ("I think therefore I am") from the philosophy of René Descartes; the mental act of thinking this thought; a conscious being which performs this mental act.
    • 1957, Jean-Paul Sartre (author), Forrest Williams and Robert Kirkpatrick (translators), The Transcendence of the Ego, Noonday Press, pp. 43-44.
      The Cogito of Descartes and Husserl is an apprehension of fact. [] Such a Cogito is performed by a consciousness directed upon consciousness, a consciousness which takes consciousness as an object.
    • 1966 Dec., Geoffrey Hartman, "Beyond Formalism," MLN, vol. 81, no. 5, p. 551:
      But are there not as many consciousnesses or cogitos as there are individuals?
    • 1984 Jan., Charles Larmore, "Descartes' Psychologistic Theory of Assent," History of Philosophy Quarterly, vol. 1, no. 1, p. 65:
      An obvious candidate for this class of propositions would be the cogito, whose evidence, Descartes insisted, is not founded on inference.
    • 2000 Spring, Linnell Secomb, "Fractured Community," Hypatia, vol. 15, no. 2, p. 138:
      Benhabib proposes a [] "recognition that the subjects of reason are finite, embodied and fragile creatures, and not disembodied cogitos or abstract unities of transcendental apperception".
    • 2009 May, Ernest Sosa, "Précis of A Virtue Epistemology," Philosophical Studies: An International Journal for Philosophy in the Analytic Tradition," vol. 144, no. 1, p. 109 n11:
      It may be thought that this leads to an even more radical skepticism than that envisaged by Descartes, since now even the cogito may be questioned.





  1. first-person singular present indicative of cogitare




From con- +‎ agitō.


  • (Classical) IPA(key): /ˈkoː.ɡi.toː/, [ˈkoːɡɪt̪oː]
  • (Ecclesiastical) IPA(key): /ˈko.d͡ʒ, [ˈkɔːd͡ʒit̪ɔ]
  • (file)


cōgitō (present infinitive cōgitāre, perfect active cōgitāvī, supine cōgitātum); first conjugation

  1. I think
    • 63 B.C.E., Cicero, Catiline Orations (Latin text and English translations here)
      Nihil agis, nihil moliris, nihil cogitas quod non ego non modo audiam sed etiam videam planeque sentiam.
      You do nothing, you plan nothing, you think of nothing which I not only do not hear, but which I do not see and know every particular of.
  2. I ponder, meditate, reflect, consider (i.e. think of, about, over)
  3. I intend, design, purpose, plan, devise (i.e. have in mind)


   Conjugation of cōgitō (first conjugation)
indicative singular plural
first second third first second third
active present cōgitō cōgitās cōgitat cōgitāmus cōgitātis cōgitant
imperfect cōgitābam cōgitābās cōgitābat cōgitābāmus cōgitābātis cōgitābant
future cōgitābō cōgitābis cōgitābit cōgitābimus cōgitābitis cōgitābunt
perfect cōgitāvī cōgitāvistī, cōgitāstī1 cōgitāvit cōgitāvimus cōgitāvistis, cōgitāstis1 cōgitāvērunt, cōgitāvēre
pluperfect cōgitāveram cōgitāverās cōgitāverat cōgitāverāmus cōgitāverātis cōgitāverant
future perfect cōgitāverō cōgitāveris cōgitāverit cōgitāverimus cōgitāveritis cōgitāverint
passive present cōgitor cōgitāris, cōgitāre cōgitātur cōgitāmur cōgitāminī cōgitantur
imperfect cōgitābar cōgitābāris, cōgitābāre cōgitābātur cōgitābāmur cōgitābāminī cōgitābantur
future cōgitābor cōgitāberis, cōgitābere cōgitābitur cōgitābimur cōgitābiminī cōgitābuntur
perfect cōgitātus + present active indicative of sum
pluperfect cōgitātus + imperfect active indicative of sum
future perfect cōgitātus + future active indicative of sum
subjunctive singular plural
first second third first second third
active present cōgitem cōgitēs cōgitet cōgitēmus cōgitētis cōgitent
imperfect cōgitārem cōgitārēs cōgitāret cōgitārēmus cōgitārētis cōgitārent
perfect cōgitāverim cōgitāverīs cōgitāverit cōgitāverīmus cōgitāverītis cōgitāverint
pluperfect cōgitāvissem, cōgitāssem1 cōgitāvissēs, cōgitāssēs1 cōgitāvisset, cōgitāsset1 cōgitāvissēmus, cōgitāssēmus1 cōgitāvissētis, cōgitāssētis1 cōgitāvissent, cōgitāssent1
passive present cōgiter cōgitēris, cōgitēre cōgitētur cōgitēmur cōgitēminī cōgitentur
imperfect cōgitārer cōgitārēris, cōgitārēre cōgitārētur cōgitārēmur cōgitārēminī cōgitārentur
perfect cōgitātus + present active subjunctive of sum
pluperfect cōgitātus + imperfect active subjunctive of sum
imperative singular plural
first second third first second third
active present cōgitā cōgitāte
future cōgitātō cōgitātō cōgitātōte cōgitantō
passive present cōgitāre cōgitāminī
future cōgitātor cōgitātor cōgitantor
non-finite forms active passive
present perfect future present perfect future
infinitives cōgitāre cōgitāvisse, cōgitāsse1 cōgitātūrum esse cōgitārī cōgitātum esse cōgitātum īrī
participles cōgitāns cōgitātūrus cōgitātus cōgitandus
verbal nouns gerund supine
genitive dative accusative ablative accusative ablative
cōgitandī cōgitandō cōgitandum cōgitandō cōgitātum cōgitātū

1At least one rare poetic syncopated perfect form is attested.

Derived termsEdit



  • cogito in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • cogito in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • cogito in Gaffiot, Félix (1934) Dictionnaire illustré Latin-Français, Hachette
  • Carl Meißner; Henry William Auden (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • to take no thought for the future: futura non cogitare, curare
  • cogito in Ramminger, Johann (accessed 16 July 2016) Neulateinische Wortliste: Ein Wörterbuch des Lateinischen von Petrarca bis 1700[2], pre-publication website, 2005-2016




  1. First-person singular (eu) present indicative of cogitar




  1. First-person singular (yo) present indicative form of cogitar.