对野性的呼唤观后感英语精练(18)

Being free of human world and even free of materials, Buck got a totally new life where he can run at the head of the pack through the pale moonlight to release his vitality and got comfort from nature. We needed materials actually, but material was void actually. How can we get free? To get free of our hearts.
There are two sentences I’d like to mention. First, human beings, never degenerate into beasts. Second, beasts, never degenerate into human beings. Correctness of those two sentences should be discussed.
Human’s progression began in the point when human beings evolved from wilderness period to civilization, but the retrogression also began at the point when people shared the feast of civilization. For us who are far away from the wilderness and raised and trained by civilization, this book gives us a new vision.