Nature
Not to be confused with nurture, nature is the brute force that traps all conscious sentient beings into a cage of reflexive action or reaction.
Actually, nature has, as most know, a soft nurturing side, and therefore, one must not assume the actions and reactions are of a negative or harmful nature in and of themselves.
Merriam-Webster Online Dictionary
nature (noun)1.
a) the inherent character or basic constitution of a person or thing - essence
b) - disposition temperament
2.
a) a creative and controlling force in the universe
b) an inner force or the sum of such forces in an individual
3.
a kind or class usually distinguished by fundamental or essential characteristics - documents of a confidential nature acts of a ceremonial nature
4.
the physical constitution or drives of an organism , especially an excretory organ or function - used in phrases like the call of nature
5.
a spontaneous attitude (as of generosity)
6.
the external world in its entirety
7.
a) humankind's original or condition - natural
b) a simplified mode of life resembling this condition
8.
the genetically controlled qualities of an organism
9.
natural scenery type