Printer's ink has been running a race against gunpowder...

Printer's ink has been running a race against gunpowder these many, many years. Ink is handicapped, in a way, because you can blow up a man with gunpowder in half a second, while it may take twenty years to blow him up with a book. But the gunpowder destroys itself along with its victim, while a book can keep on exploding for centuries.