“There are several kinds of love. One is a selfish, mean, grasping, egotistical thing which uses love for self-importance. This is the ugly and crippling kind. The other is an outpouring of everything good in you — of kindness and consideration and respect — not only the social respect of manners but the greater respect which is recognition of another person as unique and valuable. The first kind can make you sick and small and weak but the second can release in you strength, and courage and goodness and even wisdom you didn’t know you had….
And don’t worry about losing. If it is right, it happens — The main thing is not to hurry. Nothing good gets away””
So we have this weird situation where different astronomical observations indicate quite strongly that dark matter exists: motions of galaxies in clusters, motions of stars in galaxies, gravitational lensing and the cosmic microwave background. But we can’t find it, or haven’t found it yet. Other ideas, for example, that the dark matter is made of small black holes made a long time ago, have also been ruled out, or at least tightly constrained.
This is science in the making, when different groups of scientists converge to try to figure something out by taking as many different routes as possible. We are trying to tease out a secret that nature clearly enjoys keeping very well-guarded. The challenge remains, which is a good thing.”