If Only I Had Known, I Should

I Have Come To Know The Mutability Of All Human Relationships And Have Learned To Insulate Myself Against Both Heat And Cold So That A Temperature Balance Is Fairly Well Assured.

As Long As There Will Be A Man, There Will Be Wars.

[misquotation; Not By Einstein.] If Only I Had Known, I Should Have Become A Watchmaker. [apparently Remorseful For His Role In The Development Of The Atom Bomb.]

I Never Thought That Others Would Take My Theories So Much More Seriously Than I Did.

You Never Fail Until You Stop Trying.