The struggle for existence holds as much in the intellectual as in the physical world. A theory is a species of thinking, and its right to exist is coextensive with its power of resisting extinction by its rivals.

Coextensive, Coextensive, oextensive, Coextensive, Cioextensive, C9oextensive, C0oextensive, Cpoextensive, Cloextensive, Ciextensive, C9extensive, C0extensive, Cpextensive, Clextensive, Coiextensive, Co9extensive, Co0extensive, Copextensive, Colextensive, Cowextensive, Co3extensive, Co4extensive, Corextensive, Cosextensive, Codextensive, Cowxtensive, Co3xtensive, Co4xtensive, Corxtensive, Cosxtensive, Codxtensive, Coewxtensive, Coe3xtensive, Coe4xtensive, Coerxtensive, Coesxtensive, Coedxtensive, Coezxtensive, Coesxtensive, Coedxtensive, Coecxtensive, Coeztensive, Coestensive, Coedtensive, Coectensive, Coexztensive, Coexstensive, Coexdtensive, Coexctensive, Coexrtensive, Coex5tensive, Coex6tensive, Coexytensive, Coexgtensive, Coexrensive, Coex5ensive, Coex6ensive, Coexyensive, Coexgensive, Coextrensive, Coext5ensive, Coext6ensive, Coextyensive, Coextgensive, Coextwensive, Coext3ensive, Coext4ensive, Coextrensive, Coextsensive, Coextdensive, Coextwnsive, Coext3nsive, Coext4nsive, Coextrnsive, Coextsnsive, Coextdnsive, Coextewnsive, Coexte3nsive, Coexte4nsive, Coexternsive, Coextesnsive, Coextednsive, Coextebnsive, Coextehnsive, Coextejnsive, Coextemnsive, Coexte nsive, Coextebsive, Coextehsive, Coextejsive, Coextemsive, Coexte sive, Coextenbsive, Coextenhsive, Coextenjsive, Coextenmsive, Coexten sive, Coextenasive, Coextenwsive, Coextenesive, Coextendsive, Coextenxsive, Coextenzsive, Coextenaive, Coextenwive, Coexteneive, Coextendive, Coextenxive, Coextenzive, Coextensaive, Coextenswive, Coextenseive, Coextensdive, Coextensxive, Coextenszive, Coextensuive, Coextens8ive, Coextens9ive, Coextensoive, Coextensjive, Coextenskive, Coextensuve, Coextens8ve, Coextens9ve, Coextensove, Coextensjve, Coextenskve, Coextensiuve, Coextensi8ve, Coextensi9ve, Coextensiove, Coextensijve, Coextensikve, Coextensicve, Coextensifve, Coextensigve, Coextensibve, Coextensi ve, Coextensice, Coextensife, Coextensige, Coextensibe, Coextensi e, Coextensivce, Coextensivfe, Coextensivge, Coextensivbe, Coextensiv e, Coextensivwe, Coextensiv3e, Coextensiv4e, Coextensivre, Coextensivse, Coextensivde, Coextensivw, Coextensiv3, Coextensiv4, Coextensivr, Coextensivs, Coextensivd, Coextensivew, Coextensive3, Coextensive4, Coextensiver, Coextensives, Coextensived.