This is what the painter, the poet, the speculative philosopher, and the natural scientists do, each in his own fashion.

In one's youth every person and every event appear to be unique. With age one becomes much more aware that similar events recur. Later on, one is less often delighted or surprised, but also less disappointed than in earlier years.

Science is a wonderful thing if one does not have to earn one's living at it.

All our thinking is of this nature, a free play with concepts.

The distinction between the past, present and future is only a stubbornly persistent illusion.

I am a Jew, but I am enthralled by the luminous figure of the Nazarene….No one can read the Gospels without feeling the actual presence of Jesus.

Paper is to write things down that we need to remember. Our brains are used to think.