When the mind once allows a doubt to gain entrance, the value of deeds performed grow less, their character changes, we forget the past and dread the future.

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

As for Phileas Fogg, it seemed just as if the typhoon were a part of his programme

What a big book, captain, might be made with all that is known!" "And what a much bigger book still with all that is not known!

Yes, I could see these enormous elephants, whose trunks were tearing down large boughs, and working in and out the trees like a legion of serpents. I could hear the sounds of the mighty tusks uprooting huge trees!

Look with all your eyes, look.

I can undertake and persevere even without hope of success.