“ Soundness of mind ” involves being able to think and reason sensibly. It includes the ability to face things as they are ​ — not the way you would like them to be.
(‏ ۲تیمو ۱ :‏ ۷‏ ،‏ ترجمهٔ دنیای جدید‏ )‏ شخص ‹ خرداندیش › می‌تواند به نحوی معقول تفکّر و استدلال کند و با شرایط سخت و نامطلوب روبرو شود .‏