This is of course, the same Prince Rupert for whom the Prince Rupert's Drop is named. Although this is ostensibly because he was the man who demonstrated it to the Crown, I always found some amount of schadenfreude in the fact that the man was known for cavalry charges that went too far and shattered his line as well as the enemy's.
Quotes are a unique enough medium of expression that I'm interested in viewing quotes that people have found collectable, emotionally impactful, useful, memorable, or otherwise noteworthy - perhaps others are similarly interested. To clarify, these need not be even remotely related to rationality. I'm hijacking the mandates traditionally used for the Rationality Quotes thread, with a few modifications:
Please post any meta discussion in the top-level comment named "Meta".