Is mítharba lend cach maín 7 cach maith it ingnais.

Is mítharba lend cach maín 7 cach maith it ingnais.

(is * unprofitableness * with us * every * wealth * and * every * goodness * in your * absence)

Nothing seems as good when you're gone.

At the beginning of "Aided Guill", Cú Chulainn is about to ride off in his chariot on a circuit. Conchobor tells him not to be long ("nadba cian ind aurnaide [airnaide] duit"), because everyone will miss him.