To his own ruin the fool gains knowledge

Yāvadeva anatthāya, ñattaṃ bālassa jāyati;

Hanti bālassa sukkaṃsaṃ, muddhamassa vipātayaṃ.

To his own ruin the fool gains knowledge,

for it cleaves his head and destroys his innate goodness.

Dhammapada, 72.