Live as you will wish to have lived when you are dying. – Christian Furchtegott Gellert

As if you could kill time without injuring eternity. – Henry David Thoreau, “Economy,” Walden, 1854

There are a million ways to lose a work day, but not even a single way to get one back. – Tom DeMarco and Timothy Lister

Every second is of infinite value. – Johann Wolfgang von Goethe