She was the light of my world, but with her sun gone down I notice the twinkling of the stars beyond, and each one of them a sun too.

There is no such thing as boredom, only an acute shortage of curiousity.

How satisfying it is to leave a mark on a blank surface. To make a map of my movement - no matter how temporary.

I am an optimist... I choose to be. There is a lot of darkness in our world, there is a lot of pain and you can choose to see that or you can choose to see the joy. If you try to respond positively to the world, you will spend your time better.

For myself I am an optimist - it does not seem to be much use to be anything else.

As a scientist, my glass is always 100% full: with water and air