Nothing can stop the man with the right mental attitude from achieving his goal nothing on earth can help the man with the wrong mental attitude.
I don't think immortality is necessarily the key to understanding the world. You have to be careful with what you think you're achieving. I'm all for science discovering amazing and fantastic things about our world but I think the motivations behind it are slightly askew.
The prospect of success in achieving our most cherished dream is not without its terrors. Who is more deprived and alone than the man who has achieved his dream?