To live in the hearts of others is to never die in those we leave behind.

There are wonders enough out there without our inventing any.

We've arranged a civilization in which most crucial elements profoundly depend on science and technology.

Finding the occasional straw of truth awash in a great ocean of confusion and bamboozle requires intelligence, vigilance, dedication, and courage. But if we don't practice these tough habits of thought, we cannot hope to solve the truly serious problems that face us --- and we risk becoming a nation of suckers, up for grabs by the next charlatan who comes along.

Where we have strong emotions, we're liable to fool ourselves.

Recent research shows that many children without enough to eat wind up with diminished capacity to understand and learn (“cognitive impairment” ). Children don't have to be starving for this to happen. Even mild undernourishment — the kind most common among poor people in America — can do it.

Don't judge everyone else by your own limited experience.