The statement contrasts fear with understanding, suggesting that greater knowledge can change how people respond to what appears threatening or unfamiliar. Rather than treating fear as the final response to uncertainty, it presents investigation, learning and explanation as ways of approaching situations more rationally.

The idea does not necessarily imply that understanding removes genuine danger. Knowing more about a risk may instead make it possible to distinguish realistic concerns from those created or intensified by uncertainty. In this sense, the quotation places reason and curiosity in opposition to unexamined fear. Its broader message is that gaining knowledge can provide a firmer basis for judgement and action when confronting the unknown. Because the attribution to Marie Curie is not securely established, this interpretation concerns the meaning of the words themselves rather than treating them as a documented statement of Curie’s views.