Since the industrial revolution, humans have tended to reduce science to the ancillary role of engine of technology. But the quest for knowledge started two and a half millennia ago with the aim of setting humans free from ignorance. The first scientists and philosophers saw knowledge as the goal, not as the means. The main goal was to understand matter, life, conscience, intelligence, our origin, and our destiny, not only to solve practical problems. Being sceptical to myths and religions, they gave themselves the goal to reach The Answer via rational and empirical inquiry. Transhumanism is a very specific philosophy of technology, because one of its goals is the creation of a posthuman intelligence. Several scientists share this hope: making of technology the ancilla of science, and not vice versa