It is a curious thing: man, the centre and creator of all science, is the only object which our science has not yet succeeded in including in a homogeneous representation of the universe. We know the history of his bones, but no ordered place has yet been found in nature for his reflective intelligence.

I think that man has a fundamental obligation to extract from himself and from the earth all that it can give; and this obligation is all the more imperative that we are absolutely ignorant of what limits - they may still be very distant - God has imposed on our natural understanding and power.

Progressively saved by the machine from the anxieties that bound his hands and mind to material toil, relieved of a large part of his work and compelled to an ever-increasing speed of action by the devices which his intelligence cannot help ceaselessly creating and perfecting, man is about to find himself abruptly plunged into idleness.

Religion and science are the two conjugated faces or phases of one and the same complete act of knowledge - the only one which can embrace the past and future of evolution and so contemplate, measure and fulfil them.

In the United States, one of the main topics of academic political science is the study of attitudes and policy and their correlation. The study of attitudes is reasonably easy in the United States: heavily-polled society, pretty serious and accurate polls, and policy you can see, and you can compare them.

There are so many aspects to science that I couldn't give up - the rigor, the discoveries, the teaching. The impact that science has on the world around us is something I'm enthralled with. I don't think anyone could ever take that out of me.

The thing that upsets me is the ubiquitous use of reward technology, which uses our evolutionary biology against us.

Indeed, the whole human species is endangered, by nuclear weapons or by other means of wholesale destruction which further advances in science are likely to produce.