If you look at Einstein's equations and put in low speeds and low gravity, they become Newton's equations.

The great tragedy is that they're removing art completely, not because they're putting more science in, but because they can't afford the art teachers or because somebody thinks it's not useful. An enlightened society has all of this going on within it. It's part of what distinguishes what it is to be human from other life forms on Earth - that we have culture.

The history of exploration across nations and across time is not one where nations said, 'Let's explore because it's fun.' It was, 'Let's explore so that we can claim lands for our country, so that we can open up new trade routes; let's explore so we can become more powerful.'

Don't know if it's good or bad that a Google search on “Big Bang Theory” lists the sitcom before the origin of the Universe

If an alien lands on your front lawn and extends an appendage as a gesture of greeting, before you get friendly, toss it an eightball. If the appendage explodes, then the alien was probably made of antimatter. If not, then you can proceed to take it to your leader.

Photography is a form of time travel.

The methods and tools of science perennially breach barriers, granting me confidence that our epic march of insight into the operations of nature will continue without end.