"All I know is that I know nothing", shifting to "I don't know if I know nothing". The desperate attempt to achieve certitude will prevail the consequence of reasoning with our limited sense, maybe, slowly, just like the debate about existence of vacuum. But speaking of limitation, one certitude worth another doubt. The message is clear to never stand for anything with excessive pride
"Christians profess a religion for which they cannot give a reason and even declare that any attempt to do so would be foolishness." Pascal: "Certainly, it is in lacking proofs that they are not lacking sense. Since God is infinitely incomprehensible, then understanding Him by means of reason is a contradiction in terms. It is not because our reason is limited that we should have a limited idea of God."