A Journey into the Interior of the Earth by Jules Verne Chapter 7 A Woman's Courage

Had I been listening to the mad speculations of a lunatic, or to the scientific conclusions of a lofty genius? Where did truth stop? Where did error begin? [Axel talking about his uncle Professor Liedenbrock who tells him of his plan to go to the centre of the Earth]

Ah! women and young girls, how incomprehensible are your feminine hearts! When you are not the timidest, you are the bravest of creatures. Reason has nothing to do with your actions. [Axel's fiancée encourages him to go on the expedition knowing there was a chance she could never see him or her guardian the Professor ever again]