New discoveries in science will continue to create a thousand new frontiers for those who still would adventure.

Hoover frames scientific progress as an engine of continual renewal: even when geographic “frontiers” seem closed, discovery opens fresh realms for exploration, enterprise, and human ambition. The language of “adventure” recasts science not as dry accumulation of facts but as a lived, forward-leaning spirit—an invitation to risk, curiosity, and initiative. Implicitly, the quote argues against cultural pessimism or the idea that modernity exhausts opportunity; instead, it suggests that innovation perpetually expands the horizon of what can be attempted. It also aligns scientific discovery with broader national or civilizational dynamism, implying that societies thrive when they cultivate people willing to venture into the unknown.