The longer we dwell on our misfortunes, the greater is their power to harm us.

Many are they who have a taste and love for drawing, but no talent; and this will be discernible in boys who are not diligent and never finish their drawings with shading.

Trouble springs from idleness, and grievous toil from needless ease.

I'm not as famous as Stephen Hawking, but certainly in the U.S., I have a very high profile for a scientist. It is an awesome responsibility, one that I don't shoulder lightly.

I'm not looking for sympathy at all.