As a scientist Miss [Rosalind] Franklin was distinguished by extreme clarity and perfection in everything she undertook. Her photographs are among the most beautiful X-ray photographs of any substance ever taken.

Men will not be content to manufacture life: they will want to improve on it.

Published papers may omit important steps and the memory of men of science, even the greatest, is sadly fallible.

The psychology of a complex mind must differ almost as much from that of a simple, mechanized mind as its psychology would from ours; because something that must underlie and perhaps be even greater than sex is involved.

We will have to give up taking things for granted, even the apparently simple things.

In England, more than in any other country, science is felt rather than thought. ... A defect of the English is their almost complete lack of systematic thinking. Science to them consists of a number of successful raids into the unknown.

As the scene of life would be more the cold emptiness of space than the warm, dense atmosphere of planets, the advantage of containing no organic material at all, so as to be independent of both these conditions, would be increasingly felt.