“Mental stability is the king wielding power over the mind.
Fix it and it remains immovable
like the Powerful Lord of Mountains.
Project it and it engages in all constructive aims.
It induces an exhilarating sense of feeling physically and mentally fit.
Realizing this, the yogis with powerful command
Continuously devote themselves to absorbed concentration,
Overcoming the enemy, mental distraction.
The ennobling, impeccable Lama has practiced like that.
Let me, too, who strives for liberation,
Cultivate myself in the same way.”
From The Abbreviated Points of the Graded Path by Tsongkhhapa. Translated by Alex Berzin. PDF available from The Berzin Archives.