The beauty of moving naturally, i.e. walking and gardening, is they're low impact. You're less likely to fall down and break a hip. Setting up your life so you're nudged into general physical activity every day is a strategy for your entire life from age 10 to 100.

You rarely get satisfaction sitting in an easy chair. If you work in a garden on the other hand, and it yields beautiful tomatoes, that's a good feeling.

If one fails to develop goals that give meaning to one’s existence, if one does not use the mind to it’s fullest, then good feelings fulfill just a fraction of the potential we possess. True happiness involves the pursuit of worthy goals. Without dreams, without risks, only a trivial semblance of living can be achieved.

It's hard to reach [the age of] 100. We're not programmed for longevity. We are programmed for something called procreative success.

So learning to play a new instrument, learning a new language - those sorts of things will pay dividends for years or decades to come.

Walking is the only way proven to stave off cognitive decline - it works.

The people you surround yourself with influence your behaviors, so choose friends who have healthy habits.