Solar Biology

In Hiram Butler's Solar Biology, everyone is divided into twelve archetypes based on their natal sun sign. The planets are also used, but only the sign they occupy is important; the angles between them are ignored. This makes it easy to create a horoscope, as the time and place of birth are no longer required. The tricky computation of the rising signs and houses is skipped. You just look up the positions, then read the matching page in this book. The result is a system so simple, practically anyone can do it.