Yoga Sutra 2.7 – 2.11
Attachment is a residue of pleasant experience.
Aversion is a residue of suffering.
Clinging to life is instinctive and self-perpetuating, even for the wise.
In their subtle form, these causes of suffering are subdued by seeing where they come from.
In their gross form, as patterns of consciousness, they are subdued through meditative absorption.