No one who cannot limit ...

No one who cannot limit himself has ever been able to write.
 Nicolas Boileau-Despreaux

Quotes from the same author

But satire, ever moral, ever new, Delights the reader and instructs him, too. She, if good sense refine her sterling page, Oft shakes some rooted folly of the age.
 Nicolas Boileau-Despreaux
The greatest fools are oft the most satisfied.
 Nicolas Boileau-Despreaux
Greatest fools are the most often satisfied.
 Nicolas Boileau-Despreaux
Let a single complete action, in one place and one day, keep the theatre packed to the last.
 Nicolas Boileau-Despreaux
Attach yourself to those who advise you rather than praise you.
 Nicolas Boileau-Despreaux