I've lost track of how many times passers by would stop by my house and ask me about the plants I have growing there. Almost everybody seems to have at least one fond memory of a garden-- their mother's, grandmother's, or a neighbor's. In general, our capitalism and consumer culture prevents people from being -still-. It's always work work work go go go, one fluorescent box to another, screen to screen. It is very much a malicious design beyond the direct control of common folk. I expect that in order to give people the space with which to feel secure, breathe, be still, and re-connect with nature in their daily lives on a large and meaningful scale...well, we'd have to first completely upend the entire structure of our society. Anything less than that will fall woefully short of saving the planet and ergo our children's future.
Anyways, what I impart to children when given the chance is this: respect for life. Not just human life, but all life. A sense of purpose and honor in enriching/serving one's community and the earth. I get them involved in gardening and I make sure that the food they eat is not processed and/or full of sugar (ie it still looks like something that was once alive). Gardening gives one a strong basis on which to deal with the world. One understands that death feeds life, and that everything has its time. When it is time to cull a diseased plant or dead limb for the sake of the whole. That in many cases, it is far better to stay your hand and observe than to rush in and "fix" things. Further, to allow those around you to be their genuine selves instead of what -you- think they should be. To be aware of your surroundings and the lives of those around you in general. That it is everyone's responsibility to provide and nourish the community, not just a designated few-- especially with such a baseline, necessary task as growing, preparing, and putting food on the table. Also, that communities/families are MUCH larger than mom-dad-child(ren), and that relying on others for survival is not just our default state as a species, it is our greatest strength.