If a man harbors any sort of fear, it makes him landlord to a ghost.

Douglas’s metaphor treats fear as an act of tenancy: once admitted, it “haunts” the mind like a ghost inhabiting a house. The phrase “landlord to a ghost” suggests not merely being visited by anxiety but maintaining it—providing it space, attention, and ongoing authority over one’s inner life. The line implies that fear is self-perpetuating: it can outlast the original danger and become an invisible presence shaping decisions, relationships, and self-conception. Read this way, the quote is less about external threats than about the psychological cost of entertaining dread—how apprehension can colonize the imagination and turn a person into the custodian of their own haunting.