To insult someone we call him 'bestial. For deliberate cruelty and nature, 'human' might be the greater insult.

There is no merit to discipline under ideal circumstances. I must have it in the face of death or it is worthless.

A scientist is as weak and human as any man, but the pursuit of science may ennoble him even against his will.

... you just can't differentiate between a robot and the very best of humans.

Scientists derive satisfaction from figuring out the puzzle. It's about the quest, not the grail.

It is the writer who might catch the imagination of young people, and plant a seed that will flower and come to fruition.

What lasts in the reader's mind is not the phrase but the effect the phrase created: laughter, tears, pain, joy. If the phrase is not affecting the reader, what's it doing there? Make it do its job or cut it without mercy or remorse.