Augustine of Hippo

We are not anxious about the necessities of life, because, when we can perform these labors, he feeds and clothes us as men in general are fed and clothed. When, however, we are not able to work, then he feeds and clothes us just as the birds are fed and the lilies clothed, since we are of more value than they. Therefore, in this warfare of ours, we give no thought to the morrow, because it is not by temporal concerns pertaining to the morrow but by eternal matters, the concern of the everlasting today, that we have proved ourselves to him whom we cannot please if we are entangled in worldly affairs.