It is that behavior that shows rejection by a person towards all types of creeds regarding any type of deity, this term is derived from the Latin language "athĕus" and in turn this comes from the Greek language "ἄθεος" which means "without gods ”, at first the word atheism was used as a form of insult towards those individuals who refuted the belief of some religious figure worshiped by the society where he was, however with the appearance of free thoughtand other scientific currents made its significance fade. One of the most important conglomerates in the world to openly declare themselves atheists were those belonging to the movement of the French Revolution, who considered that reason should prevail over religion.
Currently atheism has been divided into two parts and classified as positive atheism and negative atheism. With regard to positive atheism, it should be noted that one of its main characteristics is the explicit denial of the presence of any deity. On the other hand, negative atheism differs on categorically denying the existence of any superior being, however, it denies their belief for what is usually considered a form very similar to agnosticism.
In general, this type of individuals who declare themselves as atheists, do so in their majority adopting a position that leans towards the intellectual and scientific part, since they reflect on the beliefs in some type of deity and end up detracting from said acts based in the absence of evidence that is of such force that they would end up affirming the existence of some type of superior divine being. It is very common for atheists to decline for two positions, one of them is more aggressive especially in terms of discussions about the existence of a god and the other at the other extreme is presented to atheists with a much more passive attitude until somewhat indifferent to what religious people believe.
Over the centuries, many characters have explicitly declared themselves atheists, among which the famous director James Cameron, the famous English-born actress Keira Knightley and the Spanish actor Javier Bardem can be highlighted. Currently, recent studies have shown that the highest number of atheists is concentrated in European countries, followed by Oceania.