Jeremiah P. Ostriker quotes

Biology has tended to be an observational science and deriving things from first principles has not been possible in the past but I hate to predict the future on that. (Jeremiah P. Ostriker)
If you take a galaxy and try to make it bigger, it becomes a cluster of galaxies, not a galaxy. If you try to make it smaller than that, it seems to blow itself apart. View quote
Jeremiah P. Ostriker