If I am taking cognisance of what is offered me by my senses I do so but to bring the results within the circle of my reason.

That circle may be the most circumscribed, but if it is, it has this advantage--it holds nothing but the truth! Yes, I swear that I have never used the evidence of the senses but as servants to my reason.

I have never permitted them to become my master.

They have not made of me that monstrous thing,--worse than a blind man,--a man who sees falsely.

And that is why I can triumph over your error and your merely animal intelligence, Frederic Larsan.
"Be of good courage, then, friend Rouletabille; it is impossible that the incident of the inexplicable gallery should be outside the circle of your reason.