Generally speaking, yes, many of the early philosophes were optimistic about the future of humankind because they saw in man an individual nature that was separate from that which ties man to the state or polis--meaning that they saw in man an unrestricted ability to achieve any goal.
Books became less expensive because labor was required
Economists said that they have a chemical plant that they can affect their self control
Albert Einstein was born in Ulm, Germany and he taught at the University of Zurich