A number of major topics are examined in depth through multiple chapters viewing them from different perspectives: grammatical constructions (their general nature, their metonymic basis, their role in grammaticization), nominal grounding (quantifiers, possessives, impersonal ), clausal grounding (its relation to nominal grounding, an epistemic account of tense, a systemic view of the English auxiliary), the "control cycle" (an abstract cognitive model with many linguistic manifestations), finite clauses (their internal structure and external grammar), and complex sentences (complementation, subordination, coordination). In each case the presentation builds from fundamentals and introduces the background needed for comprehension. At the same time, by bringing fresh approaches and new descriptive insights to classic problems, it represents a significant advance in understanding grammar and indicates future directions of theory and research in the Cognitive Grammar framework. The book is of great interest to students and practitioners of cognitive linguistics and to scholars in related areas.