For the most part we humans live with the false impression of security and a feeling of being at home in a seemingly familiar and trustworthily physical and human environment. But when the expected course of everyday life is interrupted, we realize that we are like shipwrecked people trying to keep their balance on a miserable plank in the open sea, having forgotten where they came from and not knowing whether they are drifting. But once we fully accept this, life becomes easier and there is no longer any disappointment.

The thinking that got us to where we are is not the thinking that will get us to where we want to be.

The mathematician knows some things, no doubt, but not those things one usually wants to get from him.

On the other hand, the concept owes its meaning and its justification exclusively to the totality of the sense impressions which we associate with it.

The world is not full of evil because of those who do wrong. It is full of evil because of those who do nothing.

artificial intellegance is no match for natural stupidity

The history of scientific and technical discovery teaches us that the human race is poor in independent and creative imagination. Even when the external and scientific requirements for the birth of an idea have long been there, it generally needs an external stimulus to make it actually happen; man has, so to speak, to stumble right up against the thing before the idea comes.