Turtle is known as a long live animal, it can live more than one hundred year. Most of the time, wisdom can only be gained through sustained experience and knowledge, just as below phrase: 

“You are too concerned with what has happened, and what is to come. There is a saying…Yesterday is history; Tomorrow is mystery; Today is a gift, that’s why they call it Present.”

(Master Wu Gui; wise-elderly turtle in Kungfu Panda, Animated movie by Nickelodeon).

The good news is, if we insist, we can learn wisdom from others experiences.