One aim of physical sciences had been to give an exact picture the material world. One achievement of physics in the twentieth century has been to prove that that aim is unattainable.

It is important that students bring a certain ragamuffin, barefoot irreverence to their studies; they are not here to worship what is known, but to question it.

No science is immune to the infection of politics and the corruption of power.

Ask an impertinent question and you are on the way to the pertinent answer.

Man is unique not because he does science, and his is unique not because he does art, but because science and art equally are expressions of his marvelous plasticity of mind.

Knowledge is an unending adventure at the edge of uncertainty.

The hand is the cutting edge of the mind.

We have to understand that the world can only be grasped by action, not by contemplation. The hand is more important than the eye ... The hand is the cutting edge of the mind.

Man masters nature not by force, but by understanding

Dissent is the mark of freedom.

A genius is a man who has two great ideas.

Just as a child is conceived in a womb of a woman, miraculously, so is grace freely given by God, in sacred moment of salvation.

Some people will hate you for not loving them.

You are a full of beautiful madness, an unreasonable reason, but you make sense in all things senseless.

You take a step, then another. That’s the journey. But to take a step with your eyes open is not a journey at all, it’s a remaking of your own mind.

Few are the friends of a mans self, most those of his circumstances.

And love is love, in beggars and in kings.

Poets think in short lines. Unless you're Samuel Beckett, Twitter might be more difficult for novelists.

There are 2 main things I've learned about following the Holy Spirit: It will never be easy. It will never be boring.

There's so much visible stuff around now, we're tempted to forget that it's usually the invisible that matters most.

Did the mass of men know the actual selfishness and injustice of their rulers, not a government would stand a year. - The world would foment with revolution.