To dwell on

to continue long on or in; to remain absorbed with; to stick to; to make much of; as, to dwell upon a subject; a singer dwells on a note.
- Shak.

See also: Dwell

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in classic literature ?
`She used to dwell on the cliff of Olenus by the banks of wide Peirus.'