The doctor who diagnosed me with ALS, or motor neuron disease, told me that it would kill me in two or three years.

Life would be tragic if it weren't funny.

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.

Only a very few would allow creatures like us to exist. Thus our presence selects out from this vast array only those universes that are compatible with our existence. Although we are puny and insignificant on the scale of the cosmos, this makes us in a sense the lords of creation.

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

No one can resist the idea of a crippled genius.

We are all now connected by the Internet, like neurons in a giant brain.