Human
Humans (taxonomically Homo sapiens) are the only extant members of the subtribe Hominina. The Hominina are sister of the Chimpanzees with which they form the Hominini belonging to the family of great apes. They are characterized by erect posture and bipedal locomotion; high manual dexterity and heavy tool use compared to other animals; open-ended and complex language use compared to other animal communications; and a general trend toward larger, more complex brains and societies.
Nature
Nature, in the broadest sense, is the natural, physical, or material world or universe. "Nature" can refer to the phenomena of the physical world, and also to life in general. The study of nature is a large, if not the only, part of science. Although humans are part of nature, human activity is often understood as a separate category from other natural phenomena.
Nature
A voice of greeting from the wind was sent;
The mists enfolded me with soft white arms;
The birds did sing to lap me in content,
The rivers wove their charms,—
And every little daisy in the grass
Did look up in my face, and smile to see me pass!
Richard Henry Stoddard, Hymn to the Beautiful, Stanza 4.