The True Sign Of Intelligence Is Not

Student: Dr. Einstein, Aren't These The Same Questions As Last Year's [physics] Final Exam? Dr. Einstein: Yes; But This Year The Answers Are Different.

Pure Mathematics Is, In Its Way, The Poetry Of Logical Ideas.

All These Primary Impulses, Not Easily Described In Words, Are The Springs Of Man's Actions.

I See Only With Deep Regret That God Punishes So Many Of His Children For Their Numerous Stupidities, For Which Only He Himself Can Be Held Responsible; In My Opinion, Only His Nonexistence Could Excuse Him.

Conceptions Without Experience Are Void; Experience Without Conceptions Is Blind.