In whatever you choose to do, do it because it's hard, not because it's easy. Math and physics and astrophysics are hard. For every hard thing you accomplish, fewer other people are out there doing the same thing as you. That's what doing something hard means. And in the limit of this, everyone beats a path to your door because you're the only one around who understands the impossible concept or who solves the unsolvable problem.

It's odd that the word 'atheist' even exist. I don't play golf, is there a word for non-golf players ?

I've known from long ago that the universe was calling me. If you were one of those annoying adults that said, 'Oh, what are you gonna be when you grow up?' I would say, 'Astrophysicist .' And then they'd walk away real quickly.

Some of us wake up in the morning and just wonder how it is any of us actually sustain a paid job.

In modern times, if the sole measure of what’s out there flows from your five senses then a precarious life awaits you.

There are no articles any more that dream about the cities of tomorrow.

Let us not fool ourselves into thinking we went to the Moon because we are pioneers, or discoverers, or adventurers. We went to the Moon because it was the militaristically expedient thing to do.