Jerott is portrayed as someone who approaches life with passionate instinct, contrasting sharply with Francis Crawford, who engaged with life more intellectually and detachedly. Jerott's approach to living is characterized by emotion and spontaneity, emphasizing a more visceral experience of existence. His sensitivity and natural impulses define his way of engaging with the world around him.

It is noted that Jerott’s physical health matches his passionate nature, as he has a fragile nervous and bronchial system. This vulnerability underscores his fiery spirit, suggesting that despite his delicate health, he embraces life fully and passionately. His traits paint a picture of a character driven by feeling, yet physically delicate, making his zest for life even more poignant.