A lot of good stuff in sufi mysticism too: The Sufi imagination – Mark Vernon “So praise to the One Who remains unknowable, so He is not known – and Who is known, so that He is not unknown!” Ibn ‘Arabi exclaims in a typically paradoxical theophany. :patrice::bryan: this is what im currently...
501 is the sum of the first eighteen primes. There are 501 degree-8 polynomials with integer coefficients, all of whose roots are in the unit disk. There are 501 ways of partitioning the digits from 0 to 9 into two sets, each of which contains at least two digits, and 501 ways of partitioning a set of five elements into any number of ordered sequences. 501 is also a figurate number based on the 5-orthoplex or 5-dimensional cross polytope.
In the gematria of Eleazar of Worms, the Hebrew words "temunah" (image) and "parsuf 'adam" (human face) both had the numerological value of 501. Eleazar used this equivalence to argue that, in several Biblical passages, God appeared to His prophets in the form of a human face.
502 is the numerical value of אָרוּר הָמָן ('Homon is accursed') and of בָּרוּךְ מָרְדֳּכַי ('Mordochai is blessed'); the whole point of drinking on the Purim Festival is our special obligation to get so inebriated that we cannot distinguish between these two phrases/numerical values.