If you cannot solve the proposed problem try to solve first some related problem.

In order to solve this differential equation you look at it until a solution occurs to you.

It is better to solve one problem five different ways, than to solve five problems one way.

Beauty in mathematics is seeing the truth without effort.

Solving problems is a practical art, like swimming, or skiing, or playing the piano: you can learn it only by imitation and practice.

It may be more important in the mathematics class how you teach than what you teach.

If there is a problem you can't solve, then there is an easier problem you can't solve: find it.

An idea which can be used only once is a trick. If one can use it more than once it becomes a method.

Geometry is the science of correct reasoning on incorrect figures.

Mathematics is not a spectator sport!

Look around when you have got your first mushroom or made your first discovery: they grow in clusters.

A man who is not ready to risk is not worthy of getting promotion

You're doing it again. Using reason to argue faith. Can't be done. Like playing croquet with a crochet hook. Sounds something like the right tool for the job, but isn't.

Boundary violations are deeply experienced.

I’m reminded of a book my father used to read me,” she said. “A bunch of elves and things get into a huge war over a piece of jewelry that everybody wants but nobody can wear.

Nonchalance is the ability to remain down to earth when everything else is up in the air.

The strongest people in the world are the ones who think they're weak.

A great photograph needs no explanation; it functions by suggestion. There is no need to be explicit.

In terms of merit, sports has mathematical statistics. That's how you know who the best player is.

There is properly no history, only biography.

I am an old school sort of syndicated cartoon watcher. I'm a big fan of Voltron, too.