Nature is impersonal, awe-inspiring, elegant, eternal. It's geometrically perfect. It's tiny and gigantic. You can travel far to be in a beautiful natural setting, or you can observe it in your backyard - or, in my case, in the trees lining New York City sidewalks, or in the clouds above skyscrapers.

It's so easy to wish that we'd made an effort in the past, so that we'd happily be enjoying the benefit now, but when now is the time when that effort must be made, as it always is, that prospect is much less inviting.

A 'treat' is different from a 'reward', which must be justified or earned. A treat is a small pleasure or indulgence that we give to ourselves just because we want it. Treats give us greater vitality, which boosts self-control, which helps us maintain our healthy habits.

One of the things that surprised me the most is how often we assume that because something's fun for someone else, it makes somebody else happy, it will make us happy.

I can build a happy life only on the foundation of my own nature.

No leader did more for his country than Winston Churchill. Brave, magnanimous, traditional, he was like a king-general from Britain's heroic past. His gigantic qualities set him apart from ordinary humanity; there seemed no danger he feared, no effort too great for his limitless energies.

I'm a creature of routine, and I hate feeling incompetent, so I avoided novelty and challenge. Making an effort to push myself in that way has brought me surprising boost.