Diversity and inclusion are keys to a successful work environment, but it’s easier said than done. It’s not enough to just say you welcome diverse voices; you must prove it by creating an inclusive culture.

“Culture is primarily the result of the values of the leader,” Tomas Chamorro-Premuzic says in Business Insider.

He lays out three traits that are important for inclusive leaders to have.

Curiosity

Curiosity is the most important trait an inclusive leader can have.

“Curious leaders are more interested in other people, particularly when they are different from them,” Chamorro-Premuzic explains. “They are less likely to hire people who are just like them, and more eager to understand why people think the way they do—especially when they don’t agree with them.”

When a leader of a team is curious, the team members are more likely to be curious as well. Importantly, it’s easier to be empathetic or see things from another perspective when you already have a curious mind.

Humility

If a leader shows he or she is fine not always being right, then his or her team is more likely to feel comfortable expressing their own opinions.

“Appointing humble individuals increases the probability that different opinions, ideas, and perspectives are not just tolerated, but celebrated,” Chamorro-Premuzic adds.

Courage

It’s important that leaders are curious and humble, so that they have the skills to create an inclusive culture, but it’s also imperative they have the courage to create change. Change is not always comfortable or willingly accepted by those in power.

“If the people at the top of the pyramid feel that their privileges and entitlements are under threat, and you are being perceived as a central part of that threat, you will surely lose a lot of friends and make a lot of enemies,” Chamorro-Premuzic warns.

“But unless we have courageous leaders who are genuinely committed to fighting for change, leadership will just remain a political activity where the concentration of power remains static.”

A culture of inclusion starts at the top. If organizations are serious about diversity and inclusion, then they must hire leaders that show they have curiosity, humility, and courage.