Experiment Is The Sole Source Of Truth.

One Does Not Ask Whether A Scientific Theory Is True, But Only Whether It Is Convenient.

How Is Error Possible In Mathematics?

When The Physicists Ask Us For The Solution Of A Problem, It Is Not Drudgery That They Impose On Us, On The Contrary, It Is Us Who Owe Them Thanks.

Sociology Is The Science With The Greatest Number Of Methods And The Least Results.

It May Be Appropriate To Quote A Statement Of Poincare, Who Said (partly In Jest No Doubt) That There Must Be Something Mysterious About The Normal Law Since Mathematicians Think It Is A Law Of Nature Whereas Physicists Are Convinced That It Is A Mathematical Theorem.