“A newspaper is not only a collective propagandist and a collective agitator, it is also a collective organiser.”

The Ascent of Humanity
The Ascent of Humanity (2007)

Variant: One cannot collect all the beautiful shells on the beach. One can only collect a few. One moon shell is more impressive than three. There is only one moon in the sky.
Source: Gift from the Sea (1955), p. 114

Attributed to Starrett in Michael Dirda, On Conan Doyle: Or, The Whole Art of Storytelling (2012), page 112.

2014, Review of Signals Intelligence Speech (June 2014)
Context: [T]he combination of increased digital information and powerful supercomputers offers intelligence agencies the possibility of sifting through massive amounts of bulk data to identify patterns or pursue leads that may thwart impending threats. It’s a powerful tool. But the government collection and storage of such bulk data also creates a potential for abuse.

Source: 1960s - 1970s, The Design of Inquiring Systems (1971), p. 10; cited in Daniel J. Power (2004) Decision Support Systems: Frequently Asked Questions, p. 23

Source: Death in a Tenured Position

Allegedly said to J.A. Tilleard, Honorary Secretary, Philatelic Society, on appointing him as Philatelist to the King.
Attributed

The Future of Civilization (1938)
Context: Collective effort can produce collective security and that if such effort is not made, it is because the will and the courage to make it are not there. It is therefore still more important than it ever was to realize that the real choice before us in this matter is: are we going to permit uncontrolled nationalism to dominate civilized Europe, or are we going to say that the European countries (I don't deal with the whole world, but it applies to that, too) are really part of one community with a common interest in international peace?

The Conquest of Bread (1907), p. 14 http://dwardmac.pitzer.edu/anarchist_archives/kropotkin/conquest/toc.html
Variant: All things for all men, since all men have need of them, since all men worked to produce them in the measure of their strength, and since it is not possible to evaluate everyone's part in the production of the world's wealth... All is for all!
This variant was probably produced by a combination of accidental as well as deliberate omission, rather than a separate translation.
Context: The means of production being the collective work of humanity, the product should be the collective property of the race. Individual appropriation is neither just nor serviceable. All belongs to all. All things are for all men, since all men have need of them, since all men have worked in the measure of their strength to produce them, and since it is not possible to evaluate every one's part in the production of the world's wealth.
All things are for all. Here is an immense stock of tools and implements; here are all those iron slaves which we call machines, which saw and plane, spin and weave for us, unmaking and remaking, working up raw matter to produce the marvels of our time. But nobody has the right to seize a single one of these machines and say, "This is mine; if you want to use it you must pay me a tax on each of your products," any more than the feudal lord of medieval times had the right to say to the peasant, "This hill, this meadow belong to me, and you must pay me a tax on every sheaf of corn you reap, on every rick you build."
All is for all! If the man and the woman bear their fair share of work, they have a right to their fair share of all that is produced by all, and that share is enough to secure them well-being. No more of such vague formulas as "The Right to work," or "To each the whole result of his labour." What we proclaim is The Right to Well-Being: Well-Being for All!