It’s that time of year again, when college graduates attend graduation ceremony, half-listening to celebrity speakers’ wisdom and advice. Here are the don’t-miss graduation speeches of 2016.

◆President Obama at Howard

At Howard University, Obama had some tough love for young people with enthusiasm, saying that’s just not enough: “Change requires more than anger. It requires a program and it requires organizing. Enthusiasm is very important, but you have got to have a strategy.”

◆Michelle Obama at Santa Fe Indian School

“ I want you to keep pushing forward. Just keep pushing forward. And I want you to reach out and ask for help. I know your teachers tell you that all the time, but please understand that no one gets through collegeor life, for that matter—alone. No one. I certainly didn’t.

◆SheryI Sandberg at Berkeley

As the chief operating officer of Facebook, SheryI Sandberg is one of the most famous figures in tech. last year, her husband suddenly died. In a speech at Berkeley a year later, Sandberg spoke about his death and her experience for the first in public: “My hope for you is that you can find that thankfulness—not just on the good days, like today, but on the hard ones, when you will really need it.”

◆Elizabeth Warren at Suffolk

“Knowing who you are will help when it’s time to fight. Fight for the job you want, fight for the people who mean the most to you and fight for the kind of world you want to live in. It will help when people say that’s impossible or you can’t do that. Look, if you take the unexpected opportunities when they come up, if you know yourself, and if you fight for what you believe in, I can promise that you will live a life that is rich with meaning.”