That which once was, will be no more. Yesterday will never come again. To-day is passing, and will not return. You may work while it is day; but when you have lost that day, it will not return for you to work in. While your candle burns, you may make use of its light, but when it is done, it is too late to use it.

A call to the unconverted: To which are added several valuable essays (ed. 1829)