Work gives you meaning and purpose and life is empty without it.

The victim should have the right to end his life, if he wants. But I think it would be a great mistake. However bad life may seem, there is always something you can do, and succeed at. While there's life, there is hope.

Time travel may be possible, but it is not practical.

Humanities deepest desire for knowledge is justification enough for continuing our quest. and our goal is nothing less than a complete description of the universe we live in.

Scientists tend to risk theories they admire

I think [contacting an alien civilization] would be a disaster. The extraterrestrials would probably be far in advance of us. The history of advanced races meeting more primitive people on this planet is not very happy, and they were the same species. I think we should keep our heads low.

Before we understand science, it is natural to believe that God created the universe. But now science offers a more convincing explanation.