One sees great things from the valley; only small things from the peak.

Success blinds you to the bigger picture

There's something counterintuitive about this that rings true the moment you sit with it. We assume that reaching the top—getting the promotion, buying the house, achieving the goal—gives us the clearest view of what matters. But Chesterton is pointing at something harder to admit: success can actually narrow your vision. When you're at the peak, you're focused on maintaining position, protecting what you've won, seeing threats. You're too close to your own achievement to notice the larger landscape.

The valley, though, is where perspective lives. When you're struggling or starting out, you see how systems work, how people connect, what really moves the needle. You notice problems because you're facing them. You see solutions because you're not yet invested in the old way of doing things. Failures teach you more than victories because they force attention.

This doesn't mean the valley is always better—despair can blind you just as surely as ego. But it suggests we should be suspicious of our own certainty when we're winning. The people who change things often do it by remembering what they saw from below, before they forgot how the world looks to everyone still climbing.