Chapter 2Verse 66
Sankhya Yoga
नास्ति बुद्धिरयुक्तस्य न चायुक्तस्य भावना। न चाभावयतः शान्तिरशान्तस्य कुतः सुखम्॥
nāsti buddhir ayuktasya na cāyuktasya bhāvanā, na cābhāvayataḥ śāntir aśāntasya kutaḥ sukham
Meaning
This traces a chain most people feel but never name. A mind pulled in ten directions can't think clearly, and without clear thinking there's no steadiness. Without steadiness there's no peace, and a restless mind never quite reaches happiness no matter how hard it chases it.
Reflection
A scattered mind finds no peace. And without peace, where would happiness even come from?