Any powerful technology can be abused.

In thinking about nanotechnology today, what's most important is understanding where it leads, what nanotechnology will look like after we reach the assembler breakthrough.

Likewise nanotechnology will, once it gets under way, depend on the tools we have then and our ability to use them, and not on the steps that got us there.

My work at MIT had focused on what we could build in space once we had inexpensive space transportation and industrial facilities in orbit. And this led to various sorts of work in space development.

The basic parts, the start-up molecules, can be supplied in abundance and don't have to be made by some elaborate process. That immediately makes things simpler.

I had been impressed by the fact that biological systems were based on molecular machines and that we were learning to design and build these sorts of things.

On the molecular scale, you find it's reasonable to have a machine that does a million steps per second, a mechanical system that works at computer speeds.

In a sense, artificial intelligence will be the ultimate tool because it will help us build all possible tools.

Scientists study physical things, then describe them; engineers describe physical things, then build them.

...Local prohibitions cannot block advances in military and commercial technology... Democratic movements for local restraint can only restrain the world's democracies, not the world as a whole.

Nature draws no line between living and nonliving.

The only difference between you and the person you admire is their perspective on life.

again I am torn between the necessity and the impossibility of answering.

When did it become something of shame or ridicule to be a self-made man in America?

Dreams are not theirs to take!

Kindness always starts with noticing the needs and hurts of others.

Certainly people have said a lot of deeply unfortunate and stupid things in Southern accents, but that doesn't mean there's anything wrong with the accent itself.

I believe that whether one believes in God or not is - it's very central to who I am.

The way to heaven out of all places is of length and distance.

It's not catastrophes, murders, deaths, diseases, that age and kill us; it's the way people look and laugh, and run up the steps of omnibuses.

That there are three persons, yet but one God, that do bear witness to the divinity of Christ, and of the plenteous redemption wrought by him