Individual scientists like myself - and many more conspicuous - pointed to the dangers of radioactive fallout over Canada if we were to launch nuclear weapons to intercept incoming bombers.

The applause is a celebration not only of the actors but also of the audience. It constitutes a shared moment of delight.

In nation after nation, democracy has taken the place of autocracy.

Science exists, moreover, only as a journey toward troth. Stifle dissent and you end that journey.

For science must breathe the oxygen of freedom.

Instead, in the absence of respect for human rights, science and its offspring technology have been used in this century as brutal instruments for oppression.

Even in the world of molecules the civilising influence of modest restraints is a cause for rejoicing.

Science never gives up searching for truth, since it never claims to have achieved it.

Science is an enterprise that can only flourish if it puts the truth ahead of nationality, ethnicity, class and color.

Human dignity is better served by embracing knowledge.

Some dreamers demand that scientists only discover things that can be used for good.

The first few hours in the cell were quite stimulating. I'd never been in a prison cell before and was quite enjoying the experience.

Saudi Arabia has also changed. People today are connecting with each other all across the world through small gadgets and television. It's a different society.

Conservatives have been using poor black and Latino children as mascots in the voucher crusade for a decade.

You have to believe there are kisses and laughs and risks worth taking.

In my mind, there are too many copycat web products out there that are doing the same thing.

Empathy is the greatest virtue. From it, all virtues flow. Without it, all virtues are an act.

I can go back to when I was six years old. I was always getting in trouble for dreaming, and the things I got in trouble for dreaming then are the things I'm doing today.

A hungry man can't see right or wrong. He just sees food.

Donald Trump was appealing to a lot of people with his populist message.

The man who fights against his own country is never a hero.