The Truth Of A Theory

I Never Allow Myself To Become Discouraged Under Any Circumstances. The Three Great Essentials To Achieve Anything Worthwhile Are First, Hard Work, Second, Stick-to-ittiveness, Third, Common Sense.

As For The Search For Truth, I Know From My Own Painful Searching, With Its Many Blind Alleys, How Hard It Is To Take A Reliable Step, Be It Ever So Small, Towards The Understanding Of That Which Is Truly Significant.

I Wouldn't Want To Live If I Did Not Have My Work. In Any Case, It's Good That I'm Already Old And Personally Don't Have To Count On A Prolonged Future.

Why Is It I Always Get My Best Ideas While Shaving?

We Cannot Despair Of Humanity, Since We Ourselves Are Human Beings.