Keating is all about 'carpe diem', which means 'seize the day, go for it'. He encourages his students to live their lives to the fullest, the way they want to, and not to be restrained by anything. Having this in mind, Knox gathers the courage to go after the girlfriend of a football player, who was way out of his league.
The phrase that indicated a lost in thought feel is the "Midnight shakes the memory". It means that his train of thought is going double time in the dark or at night.
Answer:
god knows. why any sane person would choose to give birth to some snot groveling subhuman known as a child is beyond me.