Neil deGrasse Tyson

The universe is not a wall, it's a door.

The universe is not a limit, it's a possibility.

The universe is not a destination, it's a journey.

The universe is not a destination, it's a process.

The universe is not a destination, it's an evolution.

The universe is not a destination, it's a transformation.

The universe is not a destination, it's a becoming.

The universe is not a destination, it's a continuous unfolding.

The universe is not a destination, it's an eternal present.

The universe is not a destination, it's an infinite possibility.

We are all connected; To each other, biologically. To the earth, chemically. To the rest of the universe atomically.

The most astounding fact is the knowledge that the atoms that comprise life on Earth, the atoms that make up the human body, are traceable to the crucibles that cooked light elements into heavy elements in their core under extreme temperatures and pressures. These stars, the high mass ones among them, went unstable in their later years. They collapsed and then exploded, scattering their enriched guts across the galaxy—guts made of carbon, nitrogen, oxygen, and all the fundamental ingredients of life itself. These ingredients become part of gas clouds that condense, collapse, form the next generation of solar systems, stars with orbiting planets. And those planets now have the ingredients for life itself. So that when I look up at the night sky, and I know that yes, we are part of this universe, we are in this universe, but perhaps more important than both of those facts is that the universe is in us.

Curious that we spend more time congratulating people who have succeeded than encouraging people who have not.

I know of no time in human history where ignorance was better than knowledge.

Science is a cooperative enterprise, spanning the generations. It's the passing of a torch from teacher, to student, to teacher. A community of minds reaching back to antiquity and forward to the stars.

The theory of evolution, like the theory of gravity, is a scientific fact.

The problem, often not discovered until late in life, is that when you look for things like love, meaning, motivation, it implies they are sitting behind a tree or under a rock. The most successful people recognize, that in life they create their own love, they manufacture their own meaning, they generate their own motivation.

We live on this speck called Earth - think about what you might do, today or tomorrow - and make the most of it.

There is no shame in not knowing. The problem arises when irrational thought and attendant behavior fill the vacuum left by ignorance.

The day we stop exploring is the day we commit ourselves to live in a stagnant world, devoid of curiosity, empty of dreams.