I can encounter Nothing at any juncture: for example, when I look for someone in a café where I expect to meet him, and he is not there. The world is suddenly coloured by his absence; and this negative fact has a peculiar reality all of its own. But, however strange this experience, it is surely not an archetype of evil. Entering Les Deux Magots to find that Sartre is not there is one of life’s blessings.
— Roger Scruton, Modern Philosophy