For people to depart from evil paths, to attain as humans is difficult. Already attained as humans, to leave female form to immediately be male is difficult. Already attained as males, to have the six roots complete is difficult. With the six roots already complete, to be born in a middle land [where the Dharma is ‘central’] is difficult. Already born in a middle land, to encounter a Buddha in this world is difficult. Already encountering a Buddha in this world, to meet a practitioner of the path is difficult. Already attaining a practitioner of the path, to give rise to the faithful mind is difficult. Already given rise to the faithful mind, to give rise to the Bodhi Mind is difficult. Already given rise to the Bodhi Mind, to be [cultivated yet] without cultivation and [realised yet] without realisation is difficult.
— Śākyamuni Buddha
(Sūtra Of 42 Sections: 36th Section)