Once human beings realize something can be done, they're not satisfied until they've done it.

Enemies make you stronger, allies make you weaker.

I'm the well-trained fruit tree. Full of well-trained feelings and abilities and all of them grafted onto me

The basic lesson of our relativistic universe is that things change. Any power must always meet a greater power.

In 1054, the patriarch of Constantinople and the pope excommunicated each other. That was the end of holiness for both churches.

Most of us choose our companions and surroundings to reflect ourselves.

To stay awake all night adds a day to your life.