verba volant, scripta manent

One characteristic of these humble people stood out: They had a high level of self-esteem. They knew who they were, and they felt good about who they were. We also decided that humility was defined not by self-deprecating behavior or attitudes but by the esteem with which you regard others. Good behavior flows naturally from that kind of humility.” Clayton M. Christensen, “How Will You Measure Your Life”, Harvard Business Review, July 2010