The correct answer to this open question is the following.
My personal definition of art is the human expression of his senses and emotions applied in paintings, literature, poetry, sculpture, architecture, and many other forms of artistic expression.
Art includes the way people express their emotions and feelings. It is a way in which people can transmit ideas that convey stories, culture, customs, and traditions.
Basically, art does exclude anything. It can be a form of expression of culture, politics, society, and other forms of human interaction.
What has changed in my thinking as a result of art is the great knowledge and emotions that ancient civilization artists such as the Egyptians or Greeks captured in their impressive buildings, temples, and monuments. You really can understand part of their history and human history in general, through art.