Answer:
Mr. Utterson was a quiet and aloof, but likeable person.
Step-by-step explanation:
It's literally in the first sentence. "Mr. Utterson the lawyer was a man of a rugged countenance, that was never lighted by a smile; cold, scanty and embarrassed in discourse; backward in sentiment; lean, long, dusty, dreary, and yet somehow lovable."
Lean- Someone who is thin but looks strong and healthy.
Long- Tall
Dusty- dull or muted/staid or uninteresting.
Dreary- sad or dull, boring, and/or miserable.