Time travel was once considered scientific heresy, and I used to avoid talking about it for fear of being labelled a 'crank.'

Quiet people have the loudest minds.

No one can resist the idea of a crippled genius.

The increase of disorder or entropy with time is one example of what is called an arrow of time, something that distinguishes the past from the future, giving a direction to time.

One can't predict the weather more than a few days in advance.

While physics and mathematics may tell us how the universe began, they are not much use in predicting human behavior because there are far too many equations to solve. I'm no better than anyone else at understanding what makes people tick, particularly women.

The human capacity for guilt is such that people can always find ways to blame themselves