Interesting perspective as interpretation where Jack says at the moment the song says "Who made up words, who made up numbers? Who wrote the Bible, who wrote the Q'uran" it might not even be a call to reflect and think for yourself (although this is absolutely a recurring theme in the song) but maybe they are implying all the science traces back not to the West (Europe) but to the East (Egypt, Africa). This interpretation aligns with the album this song was produced in, which is about Africa.

All true knowledge remains with God. There are certain ideas & pieces of knowledge that men just cannot learn. It remains out of reach, out of touch.

Also an interpreted theme in the song.

The idea of growing wiser vs. growing tall is likely not meant for the individual but for society as a whole or the world at large. The full context of the song. But it might have double meaning and refer to both individual and society.

Reminds me of Taleb's concept of Epistemic Arrogance (overvaluing that which we know)