Ateitis is a philosophical concept that originates from the Lithuanian language, meaning "future." It refers to the idea of what is to come or the potential that lies ahead. In various philosophical discussions, ateitis is often contrasted with the past and present, emphasizing the importance of future possibilities and choices. In the context of existentialism, ateitis highlights the significance of individual agency and the responsibility to shape one's future. This concept encourages people to consider their actions and decisions, as they play a crucial role in determining the course of their lives and the world around them.