Catena Aurea on Luke 12:27–31: Basil the Great

And that you may understand an elation of this kind, remember the vanity of your own youth; if at any time while by yourself you have thought about life and promotions, passing rapidly from one dignity to another, have grasped riches, have built palaces, benefitted friends, been revenged upon enemies. Now such abstraction is sin, for to have our delights fixed upon useless things, leads away from the truth. Hence He goes on to add, For all these things do the nations of the world seek after, &c.