Read this excerpt from The First Men in the Moon

I do not remember before that night thinking at all of the risks we were running. Now they came like that array of spectres that once beleaguered Prague, and camped around me. The strangeness of what we were about to do, the unearthliness of it, overwhelmed me. I was like a man awakened out of pleasant dreams to the most horrible surroundings. I lay, eyes wide open, and the sphere seemed to get more flimsy and feeble, and Cavor more unreal and fantastic, and the whole enterprise madder and madder every moment.
Which of the following is a theme that can be inferred from the passage above?

History repeats itself.
Love is greater than fear.
Mankind fears the unknown.
Pride leads to destruction.