Which two lines in this excerpt from "Address on Woman's Rights" by Elizabeth Cady Stanton show that she believed only women can address the issues that affect them and so they should be given the right to vote?
Should that gentleman be present this evening and feel disposed to give any of his objections to our movement, we will be most happy to answer him.

I should feel exceedingly diffident to appear before you wholly unused as I am to public speaking, were I not nerved by a sense of right and duty—did I not feel that the time had fully come for the question of woman's wrongs to be laid before the public—did I not believe that woman herself must do this work—for woman alone can understand the height and the depth, the length and the breadth of her own degradation and woe. Man cannot speak for us—because he has been educated to believe that we differ from him so materially, that he cannot judge of our thoughts, feelings and opinions by his own. Moral beings can only judge of others by themselves—the moment they give a different nature to any of their own kind they utterly fail. The drunkard was hopelessly lost until it was discovered that he was governed by the same laws of mind as the sober man. Then with what magic power, by kindness and love, was he raised from the slough of despond and placed rejoicing on high land. Let a man once settle the question that woman does not think and feel like himself and he may as well undertake to judge of the amount of intellect and sensation of any of the animal creation as of woman's nature. He can know but little with certainty, and that but by observation.

Among the many important questions which have been brought before the public, there is none that more vitally affects the whole human family than that which is technically termed Woman's rights. Every allusion to the degraded and inferior position occupied by woman all over the world, has ever been met by scorn and abuse.
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"Did I not believe that woman herself must do this work—for woman alone can understand the height and the depth, the length and the breadth of her own degradation and woe.

Man cannot speak for us—because he has been educated to believe that we differ from him so materially, that he cannot judge of our thoughts, feelings and opinions by his own."

Explanation:

These are the lines that show that Elizabeth Cady Stanton believed only women can address the issues that affect them and so they should be given the right to vote. Stanton was a feminist activist who believed that women deserved to have the right to vote, and in these lines, she gives us a hint of why she believed this to be the case. One of her reasons is the fact that she believes only women can truly know the problems that affect them and the best ways to deal with them.