This is the fundamental idea of the Sankhya philosophy, of which the
Yoga is avowedly the practical side. To translate this into our terms,
we may say that the Seer is the spiritual man; the instrument of vision
is the psychical man, through which the spiritual man gains experience
of the outer world. But we turn the servant into the master. We
attribute to the psychical man, the personal self, a reality which really
belongs to the spiritual man alone; and so, thinking of the quality of
the spiritual man as belonging to the psychical, we merge the spiritual
man in the psychical; or, as the text says, we think of the two as
forming one self.

7. Lust is the resting in the sense of enjoyment.

This has been explained again and again. Sensation, as, for example,
the sense of taste, is meant to be the guide to action; in this case, the
choice of wholesome food, and the avoidance of poisonous and
hurtful things. But if we rest in the sense of taste, as a pleasure in
itself; rest, that is, in the psychical side of taste, we fall into gluttony,
and live to eat, instead of eating to live. So with the other great
organic power, the power of reproduction. This lust comes into being,
through resting in the sensation, and looking for pleasure from that.

8. Hate is the resting in the sense of pain.

Pain comes, for the most part, from the strife of personalities, the
jarring discords between psychic selves, each of which deems itself
supreme. A dwelling on this pain breeds hate, which tears the warring
selves yet further asunder, and puts new enmity between them, thus
hindering the harmony of the Real, the reconciliation through the
Soul.