Which of the following quotes would support an essay on the theme of man’s quest for knowledge? “On the other hand, here's gold knocking about like cast iron at home. If only we can get some of it back…”

“I'm a practical man, and you are not. I'm not going to trust to Selenites and geometrical diagrams if I can help it.”

“We welcomed even the rareness of the air that made us pant as we ran, and which rendered speaking no longer the easy thing that it had been, but an effort to make oneself heard.”

“Oh! but we have done foolishly! To have come to this pass! Think how it might have been, and the things we might have done!"