He grokked that this was one of the critical cusps in the growth of a being wherein contemplation must bring forth right action in order to permit further growth. He acted.Stranger in a Strange Land by Robert A. Heinlein
Stranger in a Strange Land (Wikipedia)Stranger in a Strange Land is a 1961 science fiction novel by American author Robert A. Heinlein. It tells the story of Valentine Michael Smith, a human who comes to Earth in early adulthood after being born on the planet Mars and raised by Martians, and explores his interaction with an eventual transformation of Terran culture.