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One Path for All
In his writings and his career Gregory of Nyssa assumes many roles. He is a Christian Platonist, a spiritual guide for ascetics and those seeking the vision of God, as well as one of those who shaped the Trinitarian doctrine of God espoused at Constantinople in 381. But he is also a popular preacher and, paradoxically, someone unafraid of deeper speculations regarding the meaning of the Christian ideal. The translations in Part One illustrate these various concerns, but are not a sufficient basis for thethesis of Part Two, one that attempts to answer the question of how to describe the coherence of a thinker far from systematic. One solution is to appeal to Gregory's conviction that after this world all Christians, indeed all humans, will be united in diversity, and that this means that all are now on the one path to their destiny, however much their progress may differ. This answer does not pretend to solve all problems, nor does it rule out other approaches to Gregory's thought. But it locates Gregory's work in the liturgical and sacramental life of the church that includes ordinary as well as elite Christians.
Passion and Paradise
Does God suffer, and can we be close to God when we suffer? Gregory of Nyssa, on the the three most influential theologians of the early Church, offers a vision of suffering as part of our progess to final union with God.
Ambrose, Augustine, and the Pursuit of Greatness
Two important theologians of early Christianity were Ambrose of Milan and Augustine of Hippo. Both were intellectually formed by philosophers, such as Cicero, who taught that virtue was the way to greatness. Yet they saw contradictions between Roman and Christian ethical ideals. Could these competing visions of greatness be reconciled?
The Lord's Prayer
We have all had the experience of being at church and hearing the pastor say, "And now with the confidence of children we are bold to pray, 'Our Father . . .'" but before we know it we are saying "for Thine is the kingdom, and the power, and the glory, forever. Amen." In the very moment of intimacy when we are given the privilege of entering the presence of our heavenly Father, our minds have drifted off. We speak the words of the prayer, not from our hearts, but from the autopilot of memory. This is mere recitation, not prayer. If in relationships familiarity breeds contempt, in the case of the Lord's Prayer, familiarity breeds thoughtlessness. The Lord's Prayer: Confessing the New Covenant is not a Bible study in the traditional sense. It challenges us to think about the Lord's Prayer anew by understanding it as a confession of the New Covenant that Christ makes with us when we are made children of God in baptism. In hearing these familiar words afresh we learn to remember our baptismal covenant so that we might live more fully into that new relationship with God and with one another.
Modern Lens Design
Unlike the first edition, which was more a collection of lens designs for use in larger projects, the 2nd edition of Modern Lens Design is an optical “how-to.” Delving deep into the mechanics of lens design, optics legend Warren J. Smith reveals time-tested methods for designing top-quality lenses. He deals with lens design software, primarily OSLO, by far the current market leaders, and provides 7 comprehensive worked examples, all new to this edition. With this book in hand, there’s no lens an optical engineer can’t design.
Modern Optical Engineering
A revised version of a text which was first published in 1966. The book is designed as a general reference book for engineers and assumes a broad knowledge of current optical systems and their design. Additional topics include fibre optics, thin films and CAD systems.
Christian Grace and Pagan Virtue
Ambrose of Milan (340-397) was the first Christian bishop to write a systematic account of Christian ethics, in the treatise De Officiis, variously translated as "on duties" or "on responsibilities." But Ambrose also dealt with the moral life in other works, notably his sermons on the patriarchs and his addresses to catechumens and newly baptized. There is a vast modern literature on Ambrose, but only in recent decades has he begun to be taken seriously as a thinker, not just as a working bishop and ecclesiastical politician. Because Ambrose was one of the few Latin Christian writers in antiquity who knew Greek, another major area of Ambrose scholarship has been the study of his sources, not...
ANOTHER JESUS CALLING
"Inspired by the New Age book God Calling, Sarah Young claims to be receiving messages from Jesus Christ which she compiled into what is now her best-selling book, Jesus Calling. Author Warren Smith carefully documents his concerns about her book, her "Jesus," and the New Age implications contained in many of Young's devotional messages. He also warns about the danger of contemplative prayer and in elevating spiritual experiences over the Word of God."
Practical Optical System Layout: And Use of Stock Lenses
A complete optical systems design course for general optical engineers! Practical optical system layout. The ``first cut'' design of an optical system--anything from a telescope to a complicated VR helmet--is usually not done by a specialist but by a more general optical engineer. This book, drawn from the author's extensive seminar experience, details such basic design techniques in a clear, concise, ``low-math'' way that is sure to be readily accessible to anyone with a working knowledge of optics. It discusses the characteristics of a wide range of optical components, how to determine the type of components to be used, and how to arrange these components so that the system measures up to its performance objectives. Practical, step-by-step coverage includes succinct equations, simple diagrams, and clear explanations. For less experienced designers, the chapter on utilizing stock lenses (to test a concept or to prove out a possible finished device) should be especially useful.
Tetrapyrroles
Excluding the biological polymers proteins, lipids and nucleic acids, modified tetrapyrroles are the biological molecules that have had the greatest impact on the evolution of life over the past 4 billion years. They are involved in a wide variety of fundamental processes that underpin central primary metabolism in all kingdoms of life, from photosynthesis to methanogenesis. Moreover, they bring colour into the world and it is for this reason that these compounds have been appropriately dubbed the ‘pigments of life’. To understand how and why these molecules have been so universally integrated into the life processes one has to appreciate the chemical properties of the tetrapyrrole scaffold and, where appropriate, the chemical characteristics of the centrally chelated metal ion. This book addresses why these molecules are employed in Nature, how they are made and what happens to them after they have finished their usefulness.
