I am probably going to get a lot of stick for this, but I have read Origin of Species from cover to cover, and I would like to share Darwin's comment in the introduction:
"There can be no doubt that a race may be modified by occasional crosses, if aided by the careful selection of those individual mongrels, which present any desired character; but that a race could be obtained nearly intermediate between two extremely different races or species, I can hardly believe.
I think this quote from Origin of Species can give an interesting perspective - one which started me onto a path which now, whenever I see something new in Science, makes me marvel at the amazing complexity of God's creation:
That God has given creation the ability to adapt to situations, both in the physical sense, but also in emotional and spiritual - we are no longer in the garden of Eden here, and the world isn't perfect and is corrupt. But also that God made it so that it cannot devise entire new species, but to continue creating a stable life despite what Sin has caused the world to become; a key example of this is the shape of a duck's penis.
However, it is Sir Francis Bacon's quote in the preface which really means the most to me:
"To conclude, therefore, let no man out of a weak conceit of sobriety, or an ill-applied moderation, think or maintain that a man can search too far or be too well studied in the book of God's word, or in the book of God's work; divinity or philosophy, but rather let men endeavour an endless progress of proficiency in both."
And I indeed think we should - God has given us the knowledge and ability to do so. What we use that research for, however, is an entirely different ball game.