If I had any advice to [give] you it is just this: love science but do not worship it. Put science in its proper place, ranking it along with philosophy and history, music and religion, literature and art. If I had my life to live again (Darwin says), I would make it a rule to read some poetry and listen to some music at least once every week.
Science is imagination in the service of the verifiable truth and that service is indeed communal. It cannot be rigidly planned. Rather, it requires freedom and courage and the plural contributions of many different kinds of people who must maintain their individuality while giving to the group.
Human power, which mounted slowly indeed through the eons of prehistory and somewhat more rapidly after the advent of the sword and pen, has gathered momentum with logarithmic sweep since the dawn of modern science. Today it seems to be rocketing into outer space with the incredible energy of atomic fission.
Science, with technology, is the only way we have to avoid starvation, disease, and premature death. The misapplication of science and technology is due to the fact that the politics are wrong. Now my own view is that the politics are indeed wrong; but politics and science are so closely interrelated that they can hardly be separated.
The nerves have been hitherto considered as chords that have no powers of contraction within themselves, but only serving as a medium, by means of which the influence of the brain may be communicated to the muscles, and the impressions made upon the different parts of the body conveyed to the brain.