But the Bible firmly warns that, "He who trusts in his own mind (or heart) is a fool" because "the heart (of man) is deceitful above all things," too corrupt to be relied on.
Le fa go ntse jalo, Baebele e kgala boaka, e bolela gore motho yo o dirang boleo jono "ga a na tlhaloganyo ["ke seeleele se se se nang tlhaloganyo," New English Bible]" e bile "o senya mowa wa gagwe tota."