Albert Einstein biography

http://www.librarything.com/work/1816450/book/44968182

Einstein: His Life and Universe by Walter Isaacson

I second that recommendation.

Isaacson's bio is the only one that I have read as well. I enjoyed it.

Vi um Texto do Albert que fala sobre o Socialismo, se chama " Porque socialismo" muito bom, esta no Jornal Averdade

I'd also recommend Driving Mr. Albert: A Trip Across America with Einstein's Brain by Michael Paterniti. Not a complete biography, but an interesting companion read.