You can make something big when young that will carry you through life. Look at all the big startups like Microsoft, Apple, Google, Facebook, Twitter, etc. They were all started by very young people who stumbled on something of unseen value. You'll know it when you hit a home run.
If you're a photographer, they give you a camera. If you're a writer, they give you a typewriter. If you're an umpire, they give you an unseen object and they call it a strike zone, and nobody seems to agree with you no matter what you call.
Appearances are a glimpse of the unseen.
All the strength and force of man comes from his faith in things unseen. He who believes is strong; he who doubts is weak. Strong convictions precede great actions.
The substance of faith is a hope in the unseen.
It is the unseen and the spiritual in people that determines the outward and the actual.
All along the untrodden paths of the future, I can see the footprints of an unseen hand.
Nearness to nature... keeps the spirit sensitive to impressions not commonly felt and in touch with the unseen powers.
The unseen world is what emanates from God.
Once a profound truth has been seen, it cannot be 'unseen'. There's no 'going back' to the person you were. Even if such a possibility did exist... why would you want to?