In a spiral galaxy, the ratio of dark-to-light matter is about a factor of ten. That's probably a good number for the ratio of our ignorance-to-knowledge. We're out of kindergarten, but only in about third grade.
Science progresses best when observations force us to alter our preconceptions.
Science is competitive, aggressive, demanding. It is also imaginative, inspiring, uplifting.
We became astronomers thinking we were studying the universe, and now we learn that we are just studying the 5 or 10 percent that is luminous.
Does Sex Matter? Of course it does. But does it matter enough to Matter? That's a different question.
No observational problem will not be solved by more data.
I guess to me religion is a kind of moral code.
Three of my children married Jewish people. One did not and that marriage didn't last more than half a dozen years or so. The others are still very close.
Religion is not the most important thing.
I decided I needed to give up something, so I gave up teaching.
It's certainly true that most of my close friends are Jewish.
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