* Albert Einstein: A theoretical physicist known for his theory of relativity and contributions to quantum mechanics.
* Albert Schweitzer: A philosopher, theologian, organist, and physician, known for his work in Africa and ethical philosophy.
* Albert Camus: A French writer, philosopher, and Nobel laureate known for his absurdist philosophy and works like "The Stranger" and "The Plague."
* Someone else: Please provide more context.
Once you clarify who you mean by "Albert," I can provide a more specific and accurate description of their work.