Everything in the universe has a purpose. Indeed, the invisible intelligence that flows through everything in a purposeful fashion is also flowing through you.
- Wayne Dyer
The poet ranks far below the painter in the representation of visible things, and far below the musician in that of invisible things.
- Leonardo da Vinci
Sometimes the heart sees what is invisible to the eye.
- H. Jackson Brown, Jr.
Vision is the art of seeing what is invisible to others.
- Jonathan Swift