Humanity’s greatest advances are not in its discoveries – but in how those discoveries are applied to reduce inequity.

There are several hundred people who stayed in the Ebola-affected countries and continued to do the work, put themselves at great risk because medical workers are the most likely to be infected because they're helping out when the person's health is deteriorating, including quite a bit of bleeding as they're getting very, very sick.

President [George] Bush made the U.S. absolutely the leader, between its own PEPFAR, and it's been by far the biggest Global Fund donor. That's a legacy.

Microsoft's only factory asset is the human imagination.

We need to get a broader awareness. People say climate change is really bad, but painting that picture of what you're putting at risk.

Thinking about impact on children meant adding to the agenda, both the R&D agenda and the delivery agenda, but it's amazing news, even in the scale of other tragedies.

Vaccines are extremely well tested; their safety is well understood. The false allegations about vaccines causing autism have been disproven. But there are still echoes out there confusing people.