He's just suspicious about the motives of the intruder.
I wasn't ready to dwell on motives or feelings so I changed the subject.
In 374 he was assassinated by a eunuch from motives of private revenge.
The motives alike of geographical convenience and of the advantages to be gained by recognizing these movements of Roman subjects combined to urge a forward policy at Rome, and when the vigorous Vespasian had succeeded the fool-criminal Nero, a series of advances began which gradually closed up the acute angle, or at least rendered it obtuse.
Dundas, Pitt's favourite subordinate, had already committed himself by his earlier resolution of censure; and Pitt was induced by motives which are still obscure to incline the ministerial majority to the same side.
How would you define motives? Add your definition here.