Astronomers sometimes observe that a star of medium magnitude increases suddenly in size; a star invisible to the naked eye may become very brilliant and visible without any telescope - the appearance of a Nova.

Sometimes the heart sees what is invisible to the eye.

My aids, or my commands to the horse, should not be visible to the naked eye. It's kind of like when you and I are talking. We're supposed to just talk in a normal conversation and not yell. A horse is no different from us. They don't want us yelling at them, verbally or physically.

A person with good character has invisible enemies. Visible Goodness, Invisible Enemies.

A magician makes the visible invisible. A mime maks the invisble visible.

It is only when the mind and character slumber that dress can be seen.