Reid mentions "Douglas and Olshaker", in reference to John Douglas and Mark Olshaker. John Douglas is considered the founder of the FBI's Behavioral Analysis program. He has co-authored several books with Mark Olshaker. Mindhunter (2017) is a series based on Douglas and Olshaker's work.
One of the few episodes in which Agent Hotchner smiles.
Dr. Brazier recites "Be of good courage, and he shall strengthen thy heart" As she waits for them to remove the bomb.
This is from Psalm 31:24. "Be of good courage, and he shall strengthen your heart, all ye that hope in the Lord."
It is not actually possible to "speed read", regardless of IQ, the human eye cannot transmit information any faster for smart people and the brain cannot comprehend what has been read at that speed. What Reid is doing is literally scanning each page (like a computer) and memorising it all, enabling him to essentially reread the book from his memory. This allows him to get the gist of the book and important information, and go into depth on specific passages, quickly and accurately.