You use a 2048 word dictionary (a random choice in that wordlist represents [log 2048 =] 11 bits of entropy) then you generate a random string of 132 bits to be your cryptographic seed which is a sequence of 12 words from the wordlist which you memorize.
From that seed you can generate for all practical purposes an infinite number of private keys for any and all purposes in existence. Using cryptographic one way functions such as a hash or PRNG.
From that seed you can generate for all practical purposes an infinite number of private keys for any and all purposes in existence. Using cryptographic one way functions such as a hash or PRNG.
Example: truncate_as_needed ( sha512 (seed | 2022 | wallet_title | priv #123) ) = private key #123