Since there exists in this four dimensional structure [space-time] no longer any sections which represent "now" objectively, the concepts of happening and becoming are indeed not completely suspended, but yet complicated. It appears therefore more natural to think of physical reality as a four dimensional existence, instead of, as hitherto, the evolution of a three dimensional existence. Albert Einstein, 1952
A few days ago my companion and I were following a car adorned with a bumper sticker that read:
"ALL WE HAVE IS NOW".
That's not as pretty as "Today is not yesterday, today is not tomorrow" or "The journey is the reward", big favorites I saved from my 2005 Little Zen Calendar, and I was moderately disappointed when I found out it's actually a song by the Flaming Lips. Nonetheless, it's a darn good philosophy, particularly if you want to justify polishing off the leftover chocolate chips. Carpe Nestles.