She had reason to doubt him; he was real good at planning but real bad at doing.
Management capability is always less than the organization actually needs.
But one may say something and yet not be able to do it. Try, for instance, lifting yourself up by the bootstraps.
When I was younger, there was a huge gap between what I wanted to do and what I could do as an idol.
In this world, who can do a thing, will not; And who would do it, cannot, I perceive: Yet the will's somewhat — somewhat, too, the power — And thus we half-men struggle.
Most of us are called on to perform tasks far beyond what we can do. Our capabilities seldom match our aspirations, and we are often woefully unprepared. To this extent, we are all Assistant Pig-Keepers at heart.
In theory I can do almost anything; certainly I have been told how. In practice I do as little as possible. I pretend to myself that I would be quite happy in a hermit's cave, living on gruel, if someone else would make the gruel. Gruel, like so many other things, is beyond me.