Came across a brilliant question today, posed by my favourite lecturer.

Between "I, you, he/she/we", why "I" is the only one in caps, while the others are not? Though it's not a complicated question, but it is something we don't tend to notice.

The answer is because of human's self centeredness, we love ourselves more than anyone else! It's kind of true, and this question started from a poet named e.e.cummings, I bet he's the only one who wanted his name to be spelled in lowercase versions, and he may have intended it as a gesture of humility! :D