The world we have created is a product of our thinking; it cannot be changed without changing our thinking. If we want to change the world we have to change our thinking...no problem can be solved from the same consciousness that created it. We must learn to see the world anew.

I was just more stubborn and more passionate than most about physics.

Don't second guess the mistakes you've made, others will do that for you. Make things as simple as possible, but not simpler.

The wing structure of the hornet, in relation to its weight, is not suitable for flight, but he does not know this and flies anyway.

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.

If something is in me which can be called religious then it is the unbounded admiration for the structure of the world so far as our science can reveal it.

I never teach my pupils, I only attempt to provide the conditions in which they can learn.