The greatest engineering is the engineering of men.

I know what happiness is, for I have done good work.

The first experience can never be repeated. The first love, the first sun-rise, the first South Sea Island, are memories apart, and touched a virginity of sense.

I consider the success of my day based on the seeds I sow, not the harvest I reap.

If it comes to a swinging, swing all, say I.

For my part, I travel not to go anywhere, but to go. I travel for travel's sake. The great affair is to move; to feel the needs and hitches of our life more nearly; to come down off this feather-bed of civilisation, and find the globe granite underfoot and strewn with cutting flints.

There is no duty we so much underrate as the duty of being happy. By being happy we sow anonymous benefits upon the world.