Prometheus is reaching out for the stars with an empty grin on his face.

No writer or teacher or artist can escape the responsibility of influencing others whether he intends to or not, whether he is conscious of it or not.

If power corrupts, the reverse is also true; persecution corrupts the victims though perhaps in subtler and more tragic ways.

Laughter and weeping, the Greek masks of comedy and tragedy, mark the extremes of a continuous spectrum; both provide channels for the overflow of emotion; both are

The real achievement in discoveries... is seeing an analogy where no one saw one before... The essence of discovery is that unlikely marriage of cabbages and kings — of previously unrelated frames of reference or universes of discourse — whose union will solve the previously insoluble problem.

In any language it is a struggle to make a sentence say exactly what you mean.

Of all forms of mental activity, the most difficult to induce even in the minds of the young, who may be presumed not to have lost their flexibility, is the art of handling the same bundle of data as before, but placing them in a new system of relations with one another by giving them a different framework, all of which virtually means putting on a different kind of thinking-cap for the moment. It is easy to teach anybody a new fact...but it needs light from heaven above to enable a teacher to break the old framework in which the student is accustomed to seeing.