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

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.

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.

Mathematics consists in proving the most obvious thing in the least obvious way.

Takin’ it to ISIS, man!” Blue Jacket thumped his chest twice, and I read the saying on his shirt: Turning ISIS into WASWAS.

Istanbul is inspiring because it has its own code of architecture, literature, poetry, music.

Luxury is experiencing reality

Brooklyn is a very weird borough.

The construction itself is an art, its application to the world an evil parasite.

I'm interested in youth culture and popular culture.

Most of who we are is our deepest emotions, and someone who cannot feel those emotions in a positive way is never going to understand much about his fellow human beings.

Just because it's in print doesn't mean it's the gospel.

Your position in the hierarchy influences your behaviour.

The very remembrance of my former misfortune proves a new one to me.