A smooth lecture... may be pleasant; a good teacher challenges, asks, irritates and maintains high standards - all that is generally not pleasant.

The only way to learn mathematics is to do mathematics.

The author discusses valueless measures in pointless spaces.

The best way to learn is to do; the worst way to teach is to talk.

The only way to learn mathematics is to do mathematics. That tenet is the foundation of the do-it-yourself, Socratic, or Texas method.

A good stack of examples, as large as possible, is indispensable for a thorough understanding of any concept,and when I want to learn something new, I make it my first job to build one.

The beginner should not be discouraged if he finds he does not have the prerequisites for reading the prerequisites.

It is the duty of all teachers, and of teachers of mathematics in particular, to expose their students to problems much more than to facts.

Applied mathematics will always need pure mathematics just as anteaters will always need ants.

Mathematics is not a deductive science - that's a cliché... What you do is trial and error, experimentation, guesswork.

Mathematics - this may surprise or shock some - is never deductive in creation.

Definitions from Mulla Do-PiazaWisdom: Something you can learn without knowing it.

In this atmosphere Where you have to go perennially crazy only to survive, Which auspicious moment should I choose to become mad?

They lard their lean books with the fat of others' works.

Some people hear their own inner voices with great clearness and they live by what they hear. Such people become crazy, or they become legends.

Preach 90% Law and 10% grace.

No one knows whether death is really the greatest blessing a man can have, but they fear it is the greatest curse, as if they knew well.

If I go as hard as I can in practice, make sure it's a lot harder than than a fight, then the fight's going to be easy.

I will not have a sea creature destroyed, if I can help it. And I can help it.

I never made a daring rescue, which is the story people want to hear. I did go to my share of fires.

Its haunting to realize that half of the languages of the world are teetering on the brink of extinction.