There is a theory which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable.There is another theory which states that this has already happened. Douglas Adams
If you don't want to be replaced by a machine, don't try to act like one! Arno Allan Penzias
'Educational' refers to the process, not the object. Although, come to think of it, some of my teachers could easily have been replaced by a cheeseburger. Terry Pratchett
What the mass media offers is not popular art, but entertainment which is intended to be consumed like food, forgotten, and replaced by a new dish. W. H. Auden
There are two objectionable types of believers: those who believe the incredible and those who believe that "belief" must be discarded and replaced by "the scientific method." Max Born
If we go on the way we have, the fault is our greed - if we are not willing - we will disappear from the face of the globe, to be replaced by the insect. Jacques-Yves Cousteau