Single Variable Calculus: Early Transcendentals 8th Edition PDF

…I have tried to write a book that assists students in discovering calculus-both for its practical power and its surprising beauty. In this edition, as in the first seven editions, I aim to convey to the student a sense of the utility of calculus and develop technical competence, but I also strive to give some appreciation for the intrinsic beauty of the subject… 

The emphasis is on understanding concepts. I think that nearly everybody agrees that this should be the primary goal of calculus instruction. (Single Variable Calculus: Early Transcendentals 8th Edition; James Stewart; Cengage Learning [2015]; Page xi)