Japan has several small unpopulated islands where macaques, baboon-like monkeys, have been allowed to thrive and dominate the natural fauna. By the early 90's (as I recall), tourism to these islands had grown, and to increase the population for the tourists, sweet potatoes were thrown onto the beaches to enrich their (the monkeys', not the tourists') diet. At first these made little difference, as the sand that stuck to them made them inedible, until one macaque came up with the bright idea of washing the tubers off in the ocean. Others noticed, and soon all the macaques on the island were doing it.
Now, this revolution in thought had taken a decade or more to occur, but once it did, within months the macaques on all the other islands picked up the practice. How, the naturalists thought, had the idea come so quickly to the others when it had taken so long for the first? They were, after all, not in communication with each other.
The conclusion reached by some was that an idea, once held by a certain percentage of a species, becomes part of the specie's mental grid, or, as Jungians had long called it, part of the archetype or ancestral memory. Since then, other biologists, such as Rupert Sheldrake, have talked about a morphic field that pertains to classifications of living things that retain such knowledge, accessible to most members of the species from the time it is learned onward into the distant future.
I could go back to ideas of "oneness" that have been approached by physicists and mystics alike, but for me it recalls the idea of the "master of animals" that many native Americans have had traditionally, whereby a species had a master template (usually situated in a sacred mountain) by which they followed their intended design.
A lot can be drawn from these ideas (and a lot criticized, I know), but for our purposes, I refer back to Cal's idea that "little can be done." I maintained that this is largely true, but that it is not necessarily so. An idea, an attitude, that is at first maintained by a few can grow to reach others until an unspecific saturation point is reached - one hundred monkeys in our example - and the message, if not the entire spirit, becomes known to nearly everyone. Like magic.
We have seen this time and again in ideas and technologies, from the proliferation of the bow and arrow to the design and construction of pyramids. Archaeologists prefer to attribute this to diffusion, and in some cases might be right, but we might look at the acceptability of certain ideas already present to bolster our argument further. Human rights, the end of slavery, democracy, any number of ideas have been present for millenia before they became accepted as "natural and right" for human kind.
And so I suggest that one's thoughts, one's attempts at finding the sacred, might not be lonely endeavors after all, and might have much greater effects than one might think. The founder of Christianity, a man with no wealth or background, is one outstanding example.