Which part of this excerpt from Ralph Waldo Emerson's "Self-Reliance" conveys that it is ideal for people to respect others' opinions but to care only about their own?

It seems that you have missed the necessary excerpt and the options for us to answer this question, so I had to look for it. Anyway, here is the answer. The part of the excerpt from Ralph Waldo Emerson's "Self-Reliance" that conveys that it is ideal for people to respect others’ opinions but to care only about their own is this: What I must do is all that concerns me, not what the people think.