His mind was as furiously active as his hormones. - Charles Sheffield

It is remarkable that observation of the faint agglomerations of stars known as galaxies leads us, very directly and cleanly, to the conclusion that we live in a Universe of finite and determinable age. A century ago, no one could have offered even an approximate age for the Universe. For an upper bound, most nonreligious scientists would probably have said “forever.” For a lower bound, all they had was the age of the Earth.

Other people’s jobs always seemed easier than yours until you actually had to do them.

Data are not the same as information. Before you can get the answers you want, you have to ask the right question.