न चाभावयतः शान्तिरशान्तस्य कुतः सुखम् ॥ ६६ ॥
nāsti buddhirayuktasya na cāyuktasya bhāvanā .
na cābhāvayataḥ śāntiraśāntasya kutaḥ sukham .. 66 ..
Read the commentary
To the unsteady (ayukta = asamáhita), to the man who cannot fix the mind in contemplation, there can be no wisdom (buddhi), no knowledge of the true nature of the Self. To the unsteady, there can be no meditation, no intense devotion to Self-knowledge. So, to him who is not devoted to Self-knowledge there can be no peace, no tranquillity. To the peaceless man, how can there be happiness? Verily, happiness consists in the freedom of the senses from thirst of sensual enjoyment, not in the thirst (trishna) for objects. This last is mere misery indeed. While there is thirst, there can be no trace of happiness; we cannot so much as smell it.
Sense-restraint conduces to steady knowledge.
(Question) :—Why is there no knowledge for the unsteady?
(Answer) :—Listen :