The truth of a theory can never be proven, for one never knows if future experience will contradict its conclusions.

Watch the stars, and from them learn.

You can't solve problems with the same thinking that caused them.

Even the scholars in various lands have been acting as if their brains had been amputated.

I am a Jew, but I am enthralled by the luminous figure of the Nazarene. Jesus is too colossal for the pen of phrasemongers, however artful." He further added: "No man can read the gospels without feeling the actual presence of Jesus. His personality pulsates in every word. No myth is filled with such life...Theseus and other heroes of his type lack the authentic vitality of Jesus.

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.

There is, fortunately, a minority composed of those who recognize early in their lives that the most beautiful and satisfying experiences open to humankind are not derived from the outside, but are bound up with the development of the individual's own feeling, thinking and acting. The genuine artists, investigators and thinkers have always been persons of this kind. However inconspicuously the life of these individuals runs its course, none the less the fruits of their endeavors are the most valuable contributions which one generation can make to its successors.