First -- to the Churchill quote -- it seems you're correct inasmuch as it may be falsely attributed to him. As to the quote itself -- it rings quite true to me. In our youth, it's easy to come up with simple-sounding solutions For The Betterment of All, typically based on some kind of nice and fuzzy socialist worldview. Over time, as people see the
results of that thinking, it's quite common for folks to become more politically conservative (as defined in the modern US).
That's not calling (modern American) liberals stupid.. it
is noting that the (modern American) liberal has a distinct tendency to let ideology trump observation, to the detriment of all. Or as Reagan said "It's not that our liberal friends are ignorant.It's just that they know so much that just isn't so."
Now...
Otherwise, I'm firmly in the camp of "If you've got a better idea, let's hear it." All most people want to do is backseat driving, without offering any other solutions...
The thing is, new ideas aren't really required. Plenty of old ones work just fine. Emphasize
individual responsibility, accountability, and self-reliance, and the result is a strong, properous nation. Try to solve everyone's problems for them, and you end up discouraging individual betterment both on the part of the ones you take resources from,
and especially in those you give them to. The result is a slovenly culture.
You want actual policy suggestions, the books are out there. But not nearly so much will be solved with new policies so much as phasing out the old.