“Time and space are devices for describing relationships between objects and events. Time is an abstract device because it occupies no space and contains no intrinsic energy. It is a human invention (…) there is no such thing as empty space. Space refers to the physical dimensions of the universe, visible and invisible, the extension of mass, or energy, or both.”
Baren J. Alberts
In a letter to the Mail & Guardian (6 to 12 August)
