The scientist is motivated primarily by curiosity and a desire for truth.

Medicine also disregards national boundaries.

This coupling together of science with international peace, is, I think, particularly significant.

Happy indeed is the scientist who not only has the pleasures which I have enumerated, but who also wins the recognition of fellow scientists and of the mankind which ultimately benefits from his endeavors.

No matter what I've published - and you can look it up, I've published quite a lot in science, quite a few books too - none of it's very important. All will be forgotten and in a few years time will be a few comments in eight-point type in footnotes at the bottom of the page somewhere.

Every great advance in science has issued from a new audacity of imagination.

Here's what's terrifying about Ebola. Ebola is invisible. It's a monster without a face. With the science that we have now, we can perceive Ebola as being not one thing but as a swarm, and the swarm is moving through the human population and expanding its numbers. It has the qualities of a monster.

Newspapers and magazines are vanishing. But science writers are not. In fact, they are becoming so adept and varied that I hardly have time to read 'Gawker' anymore.