That is an awesome quote. Probably not Twain though :-)
And while you really can't necessarily achieve anything this way, you can make progress. So if you decide to say mine minerals on the moon, you can start making progress toward that but it may be that you never do find a ride up and back.
>>So if you decide to say mine minerals on the moon, you can start making progress toward that but it may be that you never do find a ride up and back.
No that is not how you apply this quote, to going to the moon. If wish to go to the moon, you break down the tasks of going there and coming back into smaller pieces and execute smaller set of tasks.
And while you really can't necessarily achieve anything this way, you can make progress. So if you decide to say mine minerals on the moon, you can start making progress toward that but it may be that you never do find a ride up and back.