The very basic core of a man's living spirit is his passion for adventure. The joy of life comes from our encounters with new experiences, and hence there is no greater joy than to have an endlessly changing horizon, for each day to have a new and different sun – J.K.
Every weekday I make an hour commute to and from work. Along with music, I listen to podcasts using the Apple podcast app. They are free and there are hundreds of channels you can chose to subscribe to.
There is literally a channel for any topic of your interest. Yesterday on my way back home, I listened to a Freakonomics Radio episode on why we feel like we have it harder than everyone else, very interesting stuff! By the end of each commute I learn something new. It’s satisfying and a great way to feed your intellectual curiosity.