"Pray to the Lord for strength," Nacho Libre admonishes Esqueleto, his less corpulent tag-team wrestling partner. Esqueleto's response might as well be canonized as the first article of faith for the religion of secularism: "I don't believe in God. I believe in science."
But what does science mean? Just like Jefe's understanding of the word plethora in ¡Three Amigos! there seems to be something lacking in the conventional understanding of the Latinate word. The Sicilian in The Princess Bride may have been using the word inconceivable correctly, but if Inigo Montoya questioned him, what's wrong with a little skepticism regarding the authority of Esqueleto's god?
Etymologically speaking, science is "what is known, knowledge (of something) acquired by study." From the Latin scientia, science is "knowledge, a knowing; expertness," or from sciens (genitive scientis), "intelligent, skilled." The present participle scire means "to know." This word probably originated from the Latin scindere, meaning "to cut, divide." Thus, one possible definition of science is the process of cutting, dividing, separating truth from error, and knowing.
If our understanding of the word science is imperfect, the same could also be true of our understanding of the word religion. Like Groucho Marx said, religion is simply the opium of the people, right? Isn't religion the root cause of all of the world's problems, including war and suffering? What does religion really mean?
"When a baby is born," Elder Russell M. Nelson recently asserted, "the umbilical cord is doubly ligated and severed between those two ligatures. A ligature is a tie—a secure tie. The word religion comes from Latin roots: re, meaning 'again' or 'back to,' and likely ligare, meaning 'to tie' or 'to ligate.' Thus, we understand that religion 'ties believers to God.'" (Let Your Faith Show)
In other words, we need to know what science and religion actually are before we can postulate that they are two completely irreconcilable things.