Guard

"Guard well your spare moments. They are like uncut diamonds. Discard them and their value will never be known. Improve them and they will become the brightest gems in a useful life."

"Always acknowledge a fault. This will throw those in authority off their guard and give you an opportunity to commit more."

"I'm one of those people who fiercely guards their privacy, so I hate doing interviews."

"Guard against the impostures of pretended patriotism."

"Be vigilant; guard your mind against negative thoughts."