+ 336 Worthless people live only to eat and drink; people of worth eat and drink only to live. Socrates
+ 442 The wisest of you men is he who has realized, like Socrates, that in respect of wisdom he is really worthless.
+ 396 Rabbi Eliezer says that we shouldn't delay doing teshuva (see tractate Shabbat 153a), for one never knows if he or she will get another chance. The three commodities that we all need to stock up on today are teshuva (penitence), emuna (faith), and kedusha (holiness) - once Mashiach comes, everything else will be worthless.
+ 215 You shall not turn to the worthless idols, nor shall you make molten deities for yourselves. I am the Lord, your God. Vayikra 19:4