Ideas represent a wonderful manifestation of the functioning of the human mind.

An idea occurs in the mind, where it is confined and useless. An idea lives when it leaves the mind.

An idea is an amazing creation of the human mind, which comes either as a result of one's continuous endeavors for solving a certain problem or just as a spark that lights up the considered problem.

Inside the human mind, an idea is a mental spark that occurs as a response to the challenge of a train of thought.

Knowledge is the most beautiful manifestation of the human mind.

Art is the most creative result of the human mind.