it usually happens to you, when you're solving a sūdo(h)kú...

   getting all *spastic-fantastic while solving a puzzle,
my eyes darting-autisitc...
      i had a thought... in an algebra form, associated with
the letter x... or χ (chi),
      relating to, probably the two most famous "quotes",
                     i.e. clichés (clish...          says) -
what where they? cogito ergo sum... and carpe diem...
so i made a little diagram:

                                        cogito    diem
                                                   χ
                                          sum      carpe...

in the cartesian example? you're not prompted to do anything.
oddly enough...
             where did the ergo go?
                               well, it became lodged in the χ (chi) for one...
for seconds?      article scissors... or the basis for atheism...
       what, exactly, is, the day?
                   your birthday? d-day landing in normandy?
     the 8th of march 1917?
                                        funny, eh? i think, i seize...
                 and then the sigma of: a day, the day, or being in general,
the summation of something.
                how about: seize yourself?    sorta like...   carpe sum?
and the infamous: think of today:             i.e.       cogito diem?
the χ (chi) is based on the principle of expressing ergo...
the cascade...
            the waterfall...
              in cogitans no- veritas (there is no truth in thinking) -
  so much so that:         qua res cogitans... no- omni vera -
        as being, a thinking thing... there are no all-encompassing truths.
            what's the 20th century conceptualisation of
the ancient latin carpe diem?  heidegger's dasein...
                             heidegger's dasein is, literally, carpe diem...
a day... and seizing it...
          well... the germans just call it:         tag, for what's diem,
   and seize...    ergreifen, which is consecrated on the latin
altar of the word carpe...
   if a roman were to say carpe diem, a germanic "barbarian" would
reply ergreifentag... or in modern spreschen, dasein...
   as in: being "there", there, also denoting the temporal realm,
   that in unit, requested encompassing the universe, isn't a minute,
or a second... but, a, day: the day is da, i.e. where...
            which is why carpe diem compliments the dasein
conceptualißation, so wonderfully;
        it's also a necessity, to call forth history, as the happening,
or in dasein terms: being...
                   as necessary, on a particular day,
          in the realm of universal / uniform experience,
                of ranging possibility, either fulfilled, or abandoned.