Are the tragedies of King Lear Fate, or a result of Human Failure?

To qualify as a tragedy, the main character must experience a downfall that is made through some fault in their own character. The question must then be whether Lear acts with reckless and callous words and deeds knowing their potential for destruction, or did he just let his pride get the better of him. In my book, Lear is the author of his own tragedy, which sadly is a very common human failure. Hope this helps. IbI