What we know is not much. What we don't know is enormous.
"Budget of Paradoxes". Book by Augustus De Morgan, 1866.
![What we know is not much. What we don't know is enormous.](http://cdn.quoteddaily.com/images/pierre-simon-laplace/what-we-know-is-not-much-what-we-dont-know-is-enormous.jpg)
What we know is not much. What we don't know is enormous.