Certitude is not the test of certainty. We have been cocksure of many things that were not so.

Certitude is not the test of certainty. We have been cocksure of many things that were not so.

确信不是对确信的检验。我们确信许多事情并非如此。

-- Oliver Wendell Holmes, Sr. 奥利弗·温德尔·霍姆斯，老。