I try to practise the advice I give others and to live according to the teachings I write down. This does not mean that I always succeed in doing so. But the endeavour being there, the ideas they concern have been put through some testing in action: they are not left in the air as mere untried theories. Today, through a world-wide correspondence and formerly through numerous interviews I have uncovered in addition to them the experiences of people standing in every grade of development.
-- Perspectives > Chapter 12: Reflections > # 27