Schumacher on Wisdom

I've just been re-reading EF Schumacher's Small is beautiful (1973). Came across one of my favourite passages in the Education chapter (p. 66):

At present, there can be little doubt that the whole of mankind is in moral danger, not because we are short of scientific and technical knowledge, but because we tend to use it destructively, without wisdom. More education can help us only if it produces more wisdom.