Teach Principles Not Formulas.

I Would Rather Have Questions That Can't Be Answered Than Answers That Can't Be Questioned.

If The Professors Of English Will Complain To Me That The Students Who Come To The Universities, After All Those Years Of Study, Still Cannot Spell 'friend,' I Say To Them That Something's The Matter With The Way You Spell Friend.

I Am Not Interested In What Today's Mathematicians Find Interesting.

I Think It's Much More Interesting To Live Not Knowing Than To Have Answers Which Might Be Wrong. I Have Approximate Answers, And Possible Beliefs, And Different Degrees Of Uncertainty About Different Things, But I Am Not Absolutely Sure Of Anything. There Are Many Things I Don't Know Anything About, Such As Whether It Means Anything To Ask "why Are We Here?" I Might Think About It A Little Bit, And If I Can't Figure It Out Then I Go On To Something Else. But I Don't Have To Know An Answer. I Don't Feel Frightened By Not Knowing Things, By Being Lost In The Mysterious Universe Without Having Any Purpose - Which Is The Way It Really Is, As Far As I Can Tell.

The Fact That You Are Not Sure Means That It Is Possible That There Is Another Way Someday.