Bill Gates used Twitter on Monday morning to offer some words of wisdom to the class of 2017.

Here's what he had to say.

Like most good commencement speakers, he started with some levity.

But he made a quick pivot and shared an interesting piece of information: the field he would pursue if he were beginning his career in 2017.

Gates, who dropped out of Harvard after his sophomore year, said there were several things he wished he had known when he left.


Gates, who dropped out of Harvard after his sophomore year, said there were several things he wished he had known when he left.
ScrapeTV

What he had once placed a premium on became less meaningful as he got older.

What he had once placed a premium on became less meaningful as he got older.
Flickr

Gates said he wished he had been more aware of suffering elsewhere in the world.

He urged new graduates to take advantage of the knowledge they have to do good in the world.

He also urged his followers to continue to strive for self-improvement.

And despite being the world's richest man -- his net worth is over $85 billion -- Gates says that's not what brings him joy.

And despite being the world's richest man -; his net worth is over $85 billion -; Gates says that's not what brings him joy.
Gates with his daughter, Jennifer. Shutterstock Rex for EEM

He also had words of support for those who have become disillusioned by war and suffering.

His belief that the world can be made better is what keeps him going day in and day out.

His belief that the world can be made better is what keeps him going day in and day out.
Bill GatesREUTERS/Mike Segar

He finished his impromptu address with a few encouraging words for graduates.

He finished his impromptu address with a few encouraging words for graduates.
Justin Sullivan/Getty Images

This post originally appeared on Business Insider.

Published on: May 15, 2017