Time travel used to be thought of as just science ...

The radiation left over from the Big Bang is the same as that in your microwave oven but very much less powerful. It would heat your pizza only to minus 271.3*C - not much good for defrosting the pizza, let alone cooking it.

Most sets of values would give rise to universes that, although they might be very beautiful, would contain no one able to wonder at that beauty.

I have noticed even people who claim everything is predestined, and that we can do nothing to change it, look before they cross the road.

I don't feel old. I don't feel anything till noon. That's when it's time for my nap.

It takes a long time to become young.

Growing old is no more than a bad habit which a busy person has no time to form.

Old age is an excellent time for outrage. My goal is to say or do at least one outrageous thing every week.

The credit of advancing science has always been due to individuals and never to the age.

Science cannot tell theology how to construct a doctrine of creation, but you can't construct a doctrine of creation without taking account of the age of the universe and the evolutionary character of cosmic history.

The older generation had greater respect for land than science. But we live in an age when science, more than soil, has become the provider of growth and abundance. Living just on the land creates loneliness in an age of globality.

Wisdom alone is the science of other sciences.

One travels more usefully when alone, because he reflects more.

He travels the fastest who travels alone.

I get a friend to travel with me... I need somebody to bring me back to who I am. It's hard to be alone.

When the traveler goes alone he gets acquainted with himself.