In his many interviews, Jack offered many words of wisdom. Some related to his own lessons learned. Others seemed to derive from his personal observations. Each and every one was inspiring.
Tell us which one has touched you the most. You can draw from interviews or lines he spoke in roles he played.
Editor's Notes: Since I still can't leave comments, I'll post my answer here:
I like Jack's talking about how he and Marie were looking for a house to buy in California. After a lengthy search, they settled on a house only to learn that someone else already had purchased it. So, they started looking at lots in order to build a house. The search became thoroughly frustrating, but they kept on looking. And then came the offer to do "Hawaii Five-0." Then, they realized they weren't finding a house in California, because they were meant to leave that area. The lesson was not to force things to happen. If the pieces don't come together on their own, maybe it's because they aren't meant to come together.
Steve's Girl, I also like Jack's comment about not following the crowd.