“Unless, therefore, an executive looks for strength and works at making strength productive, he will only get the impact of what a man cannot do, of his lacks, his weaknesses, his impediments to performance and effectiveness. To staff from what there is not and to focus on weakness is wasteful - a misuse, if not abuse, of the human resource.”
- Peter Drucker, The Effective Executive
Update: over the years my views on the strengths have changed. Curious? Read: Overemphasizing the importance of strengths?