These will vary in every human being but knowledge is the same for every mind, and every mind may and ought to be trained to receive it.

Wright contrasts the variability of individual temperament, taste, and circumstance (“these will vary in every human being”) with the universality of knowledge as something shareable and, in principle, equally accessible. The second clause turns that claim into a moral and political argument: if knowledge is the same “for every mind,” then education should not be restricted by class, sex, or social rank. The phrase “may and ought to be trained” stresses both human capacity (education is possible) and obligation (society has a duty to cultivate it). In Wright’s reformist idiom, the line supports a democratic, egalitarian vision of schooling as the means by which reason can be developed and prejudice diminished.