Linguist. Neuroscientist. Professor, Harvard College. Author, The Better Angels of Our Nature, How The Mind Works, The Sense of Style etc.
This is a unique and indispensable guide to usage. It’s distinguished by the author’s keen discernment, his reliance on scholarship rather than dogma and superstition, and an ability to cite literary examples of contested constructions that is literally (yes, literally) awesome (yes, awesome).