The aim of good prose words is to mean what they say. The aim of good poetical words is to mean what they do not say.
The Sea Gypsy I am fevered with the sunset, I am fretful with the bay, For the wander-thirst is on…
You can discover what your enemy fears most by observing the means he uses to frighten you.
I didn't fail 12,000 times inventing the light bulb. I found 12,000 ways not to invent the light bulb.