Knowledge Without Courage Is Sterile.

It Is Impossible To Live Without Brains, Either One's Own Or Borrowed.

It Is Better To Have Too Much Courtesy Than Too Little, Provided You Are Not Equally Courteous To All, For That Would Be Injustice.

The Greatest Wisdom Often Consist In Ignorance.

Things Do Not Pass For What They Are, But For What They Seem. Most Things Are Judged By Their Jackets.

We Live By Information, Not By Sight.