Bhagavad Gita, Chapter 2, Verse 66

नास्ति बुद्धिरयुक्तस्य न चायुक्तस्य भावना । न चाभावयतः शान्तिरशान्तस्य कुतः सुखम्

nāsti buddhirayuktasya na cāyuktasya bhāvanā | na cābhāvayataḥ śāntiraśāntasya kutaḥ sukham

Translation

There is no wisdom to the unsteady, and no meditation to the unsteady, and to the unmeditative no peace; to the peaceless, how can there be happiness?

— Alladi Mahadeva Sastri

Word meanings

na

not

asti

is

buddhiḥ

Reason

ayuktasya

of the uncontrolled

na

not

ca

and

ayuktasya

of the uncontrolled

bhāvanā

meditation

na

not

ca

and

abhāvayataḥ

of the non-meditating

śāntiḥ

peace

aśāntasya

of the unpeaceful

kutaḥ

whence

sukham

happiness

Śaṅkarācārya's commentary

To the unsteady (ayuktasya) — to him who has not brought himself under the discipline of Yoga — there is no Self-knowledge (buddhi); without that, there is no power of bhāvanā or steady meditation; without meditation, there is no peace; and to the peaceless, where is happiness (sukha)? The chain runs in the reverse direction of 2.62–63: discipline → knowledge → meditation → peace → happiness.