From immemorial times, the human beings observed the heavens, reflecting on the great existential mysteries, the meaning of life and the final reality after death. Although the existence of the Almighty Judeo-Christian God constitutes the greatest existential mystery, and also contributes significantly to glimpse the other existential enigmas.
Albert Einstein, the author of the General Theory of Relativity, is recognized as the best scientist of humankind. Although there are still reasonable doubts about his religious orientation that lead to these questions: What were Einstein's religious beliefs? What was Einstein's great existential problem? Undoubtedly, he lived suffering a great existential problem, without obtaining definitive answers.