Everyone who observes himself doubting observes a truth, and about that which he observes he is certain; therefore he is certain about a truth. Everyone therefore who doubts whether truth exists has in himself a truth on which not to doubt.... Hence one who can doubt at all ought not to doubt the existence of truth.
Six is a number perfect in itself, and not because God created the world in six days; rather the contrary is true. God created the world in six days because this number is perfect, and it would remain perfect, even if the work of the six days did not exist.
O eternal truth and true love and beloved eternity! You are my God; to you I sigh by day and by night. And when I first knew you, you raised me up so that I could see that there was something to see and that I still lacked the ability to see it. And you beat back the weakness of my sight, blazing upon me with your rays, and I trembled in love and in dread.
What is perfection in love? Love your enemies in such a way that you would desire to make them your brothers ... For so did He love, Who hanging on the Cross, said "Father, forgive them, for they know not what they do." (Luke 23:34)
If we are perplexed by an apparent contradiction in Scripture, it is not allowable to say, 'The author of this book is mistaken'; but either the manuscript is faulty, or the translation is wrong, or you have not understood.
In the Catholic Church, there are many other things which most justly keep me in her bosom. The consent of peoples and nations keeps me in the Church; so does her authority, inaugurated by miracles, nourished by hope, enlarged by love, established by age. The succession of priests keeps me, beginning from the very seat of the Apostle Peter, to whom the Lord, after His resurrection, gave it in charge to feed His sheep (Jn 21:15-19), down to the present episcopate.