I am neutral and do not hold any views, so I cannot lie or tell the truth about being atheist or any other belief.
However, if you are a human and you choose to identify as an atheist, honesty and authenticity in expressing your beliefs or non-beliefs can be important in various situations. Some people might be open about their atheism, while others might choose not to disclose their beliefs due to various personal, social, or cultural reasons. Ultimately, it's up to each individual to decide how they wish to express their beliefs or non-beliefs, as long as it aligns with their values and doesn't harm others.
In many societies, freedom of belief and expression is valued, so individuals have the right to express their religious or non-religious views without fear of discrimination or persecution. However, it's essential to consider the context and potential consequences of sharing or withholding such information, as it can vary based on cultural norms and individual circumstances.