Academica, editionis posterioris liber primus (excerpt)
(lat.)
at Toronto University
[individual.utoronto.ca/pking/resources/cicero/acadpost.txt]

Academica, editionis posterioris liber secundus (excerpt)
(lat.)
at Toronto University
[individual.utoronto.ca/pking/resources/cicero/acadprio.txt]

De finibus bonorum et malorum, liber primus (excerpt)
(lat.)
at Toronto University
[individual.utoronto.ca/pking/resources/cicero/De_finibus.1.txt]

De finibus bonorum et malorum, liber primus (excerpts)
(eng.: H. Rackham)
at Epicurus.info
[www.epicurus.info/etexts/De_Finibus.htm]

De natura deorum (excerpts)
(eng.: H. Rackham)
at Epicurus.info
[www.epicurus.info/etexts/DND.htm]

De natura deorum (excerpts: books 1,2)
(french: C. Appuhn, Garnier, Paris 1935(?) )
at L'antiquité grecque et latine
[remacle.org/bloodwolf/philosophes/Ciceron/nature1.htm]
[remacle.org/bloodwolf/philosophes/Ciceron/nature2.htm]

De natura deorum (excerpt: book 3)
(french)
at Itinera Electronica
[agoraclass.fltr.ucl.ac.be/concordances/cicero_dndIII/texte.htm]

Tusculanae disputationes, liber primus (excerpt)
(lat.)
at Toronto University
[individual.utoronto.ca/pking/resources/cicero/tusculans.1.txt]

Tusculanae disputationes (excerpts: books 1, 3-5)
(french: M. Nisard, t. IV, Dubochet, Paris 1841)
at L'antiquité grecque et latine
[remacle.org/bloodwolf/philosophes/Ciceron/tusc1.htm]
[remacle.org/bloodwolf/philosophes/Ciceron/tusc3.htm]
[remacle.org/bloodwolf/philosophes/Ciceron/tusc4.htm]
[remacle.org/bloodwolf/philosophes/Ciceron/tusc5.htm]