But he watched all public incidents with a vigilant eye, and seized every passing opportunity of exposing departures from sound principle in parliament and courts of justice.
He still knew the undergraduates individually, and watched their progress with a vigilant eye.
Down to his death the pope kept a vigilant eye on the troubles in France.
You will have to be vigilant in your work in order to earn an A in this class.
Pilots must be vigilant at all times to keep their passengers safely in the air.