What makes this observation remarkable is its refusal to sentimentalize—Du Bois isn't celebrating women as inherently noble or naturally resilient, but rather recognizing that *determination itself* becomes a kind of physics, a law that supersedes every obstacle arranged against it. The phrase "no force" suggests he's comparing human resolve to tangible powers: wealth, institutional authority, violence. He's saying the internal choice to ascend outweighs them all. When a woman decides to finish medical school while raising children alone, or to leave a marriage that diminishes her, or to speak her mind in a room full of people invested in her silence, she's not displaying virtue—she's demonstrating a force that simply cannot be stopped. That distinction matters because it shifts the burden from admiration to accountability: we're not meant to merely praise her; we're meant to recognize we're witnessing something as inevitable as gravity.