Trusting friends more than strangers is definitional to personal bonds

Evidence

Personal bonds and moral values can only function as encouragements to action and cooperation if they are concepts in which we believe. Motive and belief belong together here: they are part of a person’s identity, they arise out of his passions and feelings. It is constituent of the definition of personal bonds that - within the limits of character and skill - one trusts one’s friends more deeply than strangers (see Hart and Hawthorn). — Diego Gambetta, Trust - Making and Breaking Cooperative…, 2840

Categorization

• XREF: Relevant to how the doctor’s wife, trusting her husband and the other ‘good’ blinded people, extends trust beyond strangers while others in the novel trust only their immediate kin, and then not even them. — connects to: Promises typically regulate relations with known people, not strangers; Generalized trust is defined as unspecific trust in strangers — Russell Hardin, Trust and Trustworthiness, 792; Trust historically extended far beyond the narrow modern friend circle (+2 more)
• corroborated: 2 independent passages support this claim — Diego Gambetta, Trust - Making and Breaking Cooperative…, 2840

Broader Connections

• Trust as passion can rest on either close familiarity or massive social distance #corroborates (0.75) — Diego Gambetta, Trust - Making and Breaking Cooperative…, 1068