Ces nws rov hais rau kuv tias, “Thooj ntawv dov ntawd yog sau tej lus foom phem uas yuav tawm mus thoobplaws lub tebchaws. Nyob rau ntawm thooj ntawv dov ntawd, muaj ib sab sau hais tias txhua tus tubsab yuav raug muab tshem tawm hauv lub tebchaws mus; thiab nyob rau lwm sab sau hais tias txhua tus uas coglus dag yuav raug tshem tawm mus ib yam nkaus.