Even if you're happy with the life you've chosen, you're still curious about the other options.

The unexamined life is not worth living.

In childhood be modest, in youth temperate, in adulthood just, and in old age prudent.

Beware the barrenness of a busy life.

The really important thing is not to live, but to live well. And to live well meant, along with more enjoyable things in life, to live according to your principles.

There is more to life than increasing its speed.