I believe the process of going from confusion to understanding is a precious, even emotional, experience that can be the foundation of self-confidence.

The bottom line is that time travel is allowed by the laws of physics.

When kids look up to great scientists the way they do to great musicians and actors, civilization will jump to the next level

You should never be surprised by or feel the need to explain why any physical system is in a high entropy state.

I think the relationship between memory and time is a very deep and tricky one, to tell you the truth. I don't consider memory another sense. I do consider memory that which allows us to think that time flows.

When we benefit from CT scanners, M.R.I. devices, pacemakers and arterial stents, we can immediately appreciate how science affects the quality of our lives.

One of the wonders of science is that it is completely universal. It crosses national boundaries with total ease.