On Work, Time, and Vocation - Plato

From The Republic

I am myself reminded that we are not all alike; there are diversities of natures among us which are adapted to different occupations.
Very true.
And will you have a work better done when the workman has many occupations, or when he has only one?
When he has only one.
Further, there can be no doubt that a work is spoilt when not done at the right time?
No doubt.
For business is not disposed to wait until the doer of the business is at leisure; but the doer must follow up what he is doing, and make the business his first object.
He must.
And if so, we must infer that all things are produced more plentifully and easily and of a better quality when one man does one thing which is natural to him and does it at the right time, and leaves other things.