There are many intelligent people who do not bother about religion.

The Catholic Answers

In what way are they intelligent and clever? Some are clever in mathematics; others in law, but they may be very ignorant in the science of religion. A Catholic school-child could teach many of them quite a lot in this matter. Your argument might have some value if they were well instructed in the truths of religion. But it is little use saying, “I know a very clever doctor, and he has never studied music, so I do not see the use of music.” The doctor’s medical knowledge is no argument against music, and not all the learning of your friends in mathematics, science, physics, or astronomy, can be an argument against religion. Their knowledge of these things does not make heaven the least bit less worth having, nor hell one jot more comfortable. Let us serve the God before whom all the wisdom of men is childish prattle, and who in His infinite wisdom declares that religion is necessary not only in addition to honesty and goodness, but in order to be honest and good.

Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer Carty