To show mercy. It's not "quarter" like the American twenty-five cent piece. To "show no quarter" means to show no mercy.
With respect to time, it means 15 minutes after the hour. For example, a quarter after 4 implies 4:15.
Give me liberty or give me death was a famous quote Patrick Henry said it means to give us freedom or give us death meaning make us die because the colonist were so upset they didn't want to live
it means give me freedom or i rather die.
It means forgive and forget.
To take something and pass it to someone alse.