Wisdom reposes in the heart of the discerning and even among fools she lets herself be known.
NIV
Wisdom rests [silently] in the mind and heart of him who has understanding, but that which is in the inward part of [self-confident] fools is made known. [Isa. 32:6.]AMP
Wisdom resteth in the heart of him that hath understanding: but that which is in the midst of fools is made known.
KJV
Turning your ear to wisdom and applying your heart to understanding –
NIV
Making your ear attentive to skillful and godly Wisdom and inclining and directing your heart and mind to understanding [applying all your powers to the quest for it]AMP
So that thou incline thine ear unto wisdom, and apply thine heart to understanding;
KJV