St._Francis_of_Assisi

I beseech Thee, O Lord, that the fiery and sweet strength of Thy love may absorb my soul from all things that are under
heaven, that I may die for love of Thy love as Thou didst deign to die for love of my love.St._Francis_of_Assisi

Once while travelling through a forest area St francis decided to preach to the birds that were gathered on a tree,
My sister birds, you owe much to God, and you must always and in everyplace give praise to Him; for He has given you freedom to wing through the sky and He has clothed you... you neither sow nor reap, and God feeds you and gives you rivers and fountains for your thirst, and mountains and valleys for shelter, and tall trees for your nests. And although you neither know how to spin or weave, God dresses you and your children, for the Creator loves you greatly and He blesses you abundantly. Therefore... always seek to praise God.
http://en.wikipedia.org/wiki/St._Francis_of_Assisi
other quotes-
O how glorious and holy and great to have a Father in heaven! O how holy, fair, and lovable to have a spouse in heaven! 7 O how holy and how beloved, well pleasing and humble, peaceful and sweet and desirable above all to have such a brother who has laid down His life for His sheep, 8 and who has prayed for us to the Father,


And since He has suffered so many things for us and has done and will do so much good to us, let every creature which is in heaven and on earth and in the sea and in the abysses render praise to God and glory and honor and benediction; 2 for He is our strength and power who alone is good, 3 alone most high, alone almighty and admirable, glorious and alone holy, praiseworthy and blessed without end forever and ever. Amen


And you have nothing of good in this world or in the future. You think to possess for long the vanities of this world, but you are deceived; for a day and an hour will come of which you think not and do not know and are ignorant of. The body grows feeble, death approaches, neighbors and friends come saying: "Put your affairs in order." And his wife and his children, neighbors and friends, make believe to weep. And looking, he sees them weeping and is moved by a bad emotion, and thinking within himself he says: "Behold, I place my soul and body and my all in your hands."
http://www.sacred-texts.com/chr/wosf/wosf13.htm