Good
sober - Serious and thoughtful in mood or behavior, not playful or exaggerated; or not under the influence of alcohol or drugs; clear-minded.
It was a year since he gave up drinking and had decided to remain sober all the time, and it took strength to just walk past the bar.
intrigue - To arouse curiosity and interest by unusual, new, and fascinating qualities
Though Steve didn't understand much about the field of Artificial Intelligence, he was intrigued about all the talk he heard about it, and he wanted to learn more about it.