To buy books would be a good thing if we also could buy the time to read them.

Buying books would be a good thing if one could also buy the time to read them in: but as a rule the purchase of books is mistaken for the appropriation of their contents.

It is a good thing for an uneducated man to read books of quotations.

Politics is a good thing!

Caffeine is a good thing.

If work was a good thing, the rich would have it all and not let you do it.