“What is the difference in being alone with another and being alone by one's self?”

“One's life is a heavy price to pay for being born.”

“The strongest man in the world is he who stands most alone.”

“You see, the point is that the strongest man in the world is he who stands most alone.”

“I am afraid, Torvald, I do not exactly know what religion is. ... When I am away from all this, and am alone, I will look into that matter too. I will see if what the clergyman said is true, or at all events if it is true for me.”

“I believe that before all else I am a reasonable human being, just as you are--or, at all events, that I must try and become one.”

“One of the qualities of liberty is that, as long as it is being striven after, it goes on expanding. Therefore, the man who stands in the midst of the struggle and says, "I have it," merely shows by doing so that he has just lost it.”