It's the thing I struggle with every day: the mental diligence and stamina needed to sit in front of the computer, open the file, start writing and to keep doing so, word after word, until I've created the next story. A combination of learning disability and chronic health issues make that the hardest thing for me.

I'm constantly coming up with new strategies for getting to the mental place where writing is so joyous and playful that I almost can't help putting the words down.

You look at science fiction and look how often it talks about being alien, being alienated about the other. Look at the number of blue people - 'Avatar,' I'm looking at you. And it is now easier to find people of color in science-fiction literature and media, but the issues of representation are still really, really troubling.

I figure this current era of history is the one with the best chance of quality of life for a black, female, disabled, middle-aged, queer person who's most comfortable not fitting in. The odds still aren't great, mind you. But I'll take my chances with the 21st century.

If spiritual science is to do the same for spirit that natural science has done for nature, it must investigate quite differently from the latter. It must find ways and means of penetrating into the sphere of the spiritual, a domain which cannot be perceived with outer physical senses nor apprehended with the intellect which is bound to the brain.

If you live in a ghetto and really want not to just change your life and your family's life but change your ghetto's life, make your ghetto a good neighbourhood, learn science; try to be like Mark Zuckerberg, Bill Gates and Steve Jobs.

Fascinated by history during my secondary education, then by physics and mechanics at the Ecole Polytechnique, I finally entered the national administration of mines in 1936.

During my participation in the Manhattan Project and subsequent research at Los Alamos, encompassing a period of fifteen years, I worked in the company of perhaps the greatest collection of scientific talent the world has ever known.