Quote by John Milton
He that has light within his own cleer brestMay sit ith center, and enjoy bright day,But he that hides a dark soul, and foul thoughtsBenighted walks under the mid-day Sun;Himself is his own dungeon.

Summary
This quote emphasizes the importance of having inner enlightenment and purity of thoughts. It suggests that an individual who possesses a clear and enlightened consciousness can experience happiness and contentment wherever they are. On the other hand, one who conceals dark thoughts and carries impure intentions will always be in a state of darkness, even amidst the brightest circumstances. Such an individual becomes a prisoner of their own self, confined by their own negativity and moral turpitude. Ultimately, the quote encourages cultivating inner goodness to truly live a joyful and fulfilling life.
By John Milton