I Never See What Has Been Done;

Humanity Needs Practical Men, Who Get The Most Out Of Their Work, And, Without Forgetting The General Good, Safeguard Their Own Interests. But Humanity Also Needs Dreamers, For Whom The Disinterested Development Of An Enterprise Is So Captivating That It Becomes Impossible For Them To Devote Their Care To Their Own Material Profit.

I Have No Dress Except The One I Wear Every Day. If You Are Going To Be Kind Enough To Give Me One, Please Let It Be Practical And Dark So That I Can Put It On Afterwards To Go To The Laboratory.

I Never See What Has Been Done; I Only See What Remains To Be Done.

Sometimes My Courage Fails Me And I Think I Ought To Stop Working, Live In The Country And Devote Myself To Gardening. But I Am Held By A Thousand Bonds, And I Don't Know When I Shall Be Able To Arrange Things Otherwise. Nor Do I Know Whether, Even By Writing Scientific Books, I Could Live Without The Laboratory.

All My Life Through, The New Sights Of Nature Made Me Rejoice Like A Child.