rationality

理性、理性的なこと the ability to be sensible and to have sound judgment rather than being emotional

- his rationality may have been impaired

また、合理的・論理的なこと the fact of being agreeable to reason or being based on logic.

(Oxford Dictionay and other dictionaries)

- It’s also evidence of rationality: Tech is one of the only industries where earnings continue to expand. Seattle TimesAug 21, 2016

-Today, we expect speculative tales to at least gesture toward rationality; we fetishize the “origin story.” The New YorkerAug 16, 2016

-That might sound like a weird thing to say, but also the way we think about rationality is problematic. SlateAug 15, 2016