While the people retain their virtue, and vigilance, no administration, by any extreme of wickedness or folly, can very seriously injure the government, in the short space of four years.
As part of it's 'Astro' program LAPD helicopters maintain an average nineteen-hours-per-day vigil over 'high crime areas', tactically coordinated to patrol car forces, and exceeding even the British Army's aerial surveillance of Belfast.
Be vigilant; guard your mind against negative thoughts.
I'll be ready for it to happen and that way it won't happen. It's a burden, being able to control situations with my hyper-vigilance, but it's my lot in life.
Here is the answer which I will give to President Roosevelt... We shall not fail or falter; we shall not weaken or tire. Neither the sudden shock of battle nor the long-drawn trials of vigilance and exertion will wear us down. Give us the tools and we will finish the job.
Every man who observes vigilantly, and resolves steadfastly, grows unconsciously into genius.
The price of freedom is eternal vigilance.
One of the great liabilities of history is that all too many people fail to remain awake through great periods of social change. Every society has its protectors of status quo and its fraternities of the indifferent who are notorious for sleeping through revolutions. Today, our very survival depends on our ability to stay awake, to adjust to new ideas, to remain vigilant and to face the challenge of change.