Treasure your exceptions.

Though we must hold to our faith in the evolution of species, there is little evidence as to how it has come about, and no clear proof that the process is continuing in any considerable degree at the present time.

When students of other sciences ask us what is now currently believed about the origin of species, we have no clear answer to give. Faith has given way to agnosticism. Meanwhile, though our faith in evolution stands unshaken we have no acceptable account of the origin of species.

Though we must hold to our faith in the evolution of species, there is little evidence as to how it has come about, and no clear proof that the process is continuing in any considerable degree at the present time.

I would trust Shakespeare, but I would not trust a committee of Shakespeares.