From The Spectator, 15 July 1922:
 
It is true that things so small as postcards cannot give one the splendour and glory of a great statue or a great canvas; but, all the same, their smallness is one of their virtues. A man fond of such things, riding across the Syrian Desert, on the camel tracks in the Sudan, or in Mesopotamia, or making some journey in West or East Africa, in Rhodesia, or on the North-West Frontier of India, or wherever there are wastes to pass and duties to be done, might easily thrust two or three of these little packets...