Knowledge Is Limited.

To Have Security Against Atomic Bombs And Against The Other Biological Weapons, We Have To Prevent War, For If We Cannot Prevent War Every Nation Will Use Every Means That Is At Their Disposal; And In Spite Of All Promises They Make, They Will Do It. At The Same Time, So Long As War Is Not Prevented, All The Governments Of The Nations Have To Prepare For War, And If You Have To Prepare For War, Then You Are In A State Where You Cannot Abolish War.

I Believe My Theory Of Relativity To Be True. But It Will Only Be Proved For Certain In 1981, When I Am Dead.

I Never Failed In Mathematics. Before I Was Fifteen I Had Mastered Differential And Integral Calculus.

Have The Courage To Take Your Own Thoughts Seriously, For They Will Shape You.

I Know That Philosophically A Murderer Is Not Responsible For His Crime, But I Prefer Not To Take Tea With Him.