We assume it for granted. You walk from one corner of the room into another, cars pass along the street, the Earth turns upon its axis. In ancient Greece there existed the philosopher Zeno of Elea who created a sequence of puzzles (known as Zeno's paradoxes) that call...

Take the ancient wooden ship sailing on the seas. The planks of it do eventually rot and so the sailors replace them one by one. Eventually, they replace every piece of wood. Is the ship the same ship then? And if another person gathered the old planks taken off this...

Forgiveness is that kind of word that comes so effortlessly off the lips but is agonizingly difficult to perform. We forgive because it will improve us, because it will liberate us from wrath, because we should. But what forgiveness can occur if the pain of...