I can undertake and persevere even without hope of success.

Why lower oneself to taking pride from being American or British, when you can boast of being man!

All that is impossible remains to be accomplished.

I am very bad at expressing tender sentiments. The very word 'love' frightens me.

It is a great misfortune to be alone, my friends; and it must be believed that solitude can quickly destroy reason.

It was all very well for an Englishman like Mr. Fogg to make the tour of the world with a carpet-bag; a lady could not be expected to travel comfortably under such conditions.

[we see that] science is eminently perfectible, and that each theory has constantly to give way to a fresh one.