Our task must be to free ourselves by widening our circle of compassion to embrace all living creatures and the whole of nature and its beauty.

People are like bicycles. They can keep their balance only as long as they keep moving.

That is the way to learn the most, that when you are doing something with such enjoyment that you don't notice that the time passes.

As our circle of knowledge expands, so does the circumference of darkness surrounding it.

The important thing is not to stop questioning. Curiosity has its own reason for existing. One cannot help but be in awe when he contemplates the mysteries of eternity, of life, of the marvelous structure of reality. It is enough if one tries merely to comprehend a little of this mystery every day. Never lose a holy curiosity.

One had to cram all this stuff into one's mind for the examinations, whether one liked it or not. This coercion had such a deterring effect on me that, after I had passed the final examination, I found the consideration of any scientific problems distasteful to me for an entire year.

I must try, however, as best I can, although I am very conscious of the fact that our feelings and strivings are often contradictory and obscure and that they cannot be expressed in easy and simple formulas.