Do not spoil what you have by desiring what you have not; but remember that what you now have was once among the things only hoped for. - Epicurus (341 BC - 270 BC)

The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' (I found it!) but 'That's funny ...' - Isaac Asimov (1920 - 1992)

It is the mark of an educated mind to be able to entertain a thought without accepting it. - Aristotle (384 BC - 322 BC)