It is those who concentrates on but one thing at a time who advance in this world. The great man or woman is the one who never steps outside his or her specialty or foolishly dissipates his or her individuality.
Even when I was a kid I had a good thing with kids. To this day if I go to a birthday party with one of my kids I swear to you I am so much happier hanging out with my kids and their friends than talking to the grown-ups.