Too much polishing weakens rather than improves a work.

Generosity, when once set going, knows not how to stop; as the more familiar we are with the lovely form, the more enamored we become of her charms.

He [Pliny the Elder] used to say that 'no book [etc] was so bad but some good might be got out of it'.

There is no book so bad that it is not profitable in some part. -Nullus est liber tam malus ut non aliqua parte prosit

Everyone must be given something he can grasp and recognize as his own idea.

It is difficult to retain what you may have learned unless you should practice it. -Difficile est tenere quae acceperis nisi exerceas

Unfinished paintings are more admired than the finished because the artist's actual thoughts are left visible.