Economic Question about "The Worldly Philosopher" by Robert Hielbronner vs Thomas Malthus vs Solow's growth model

Robert Hielbronner discusses, in the "The Worldly Philosopher," the classical views on growth developed by Thomas Malthus. How does Thomas Malthus economists' view of growth differ from Solow's growth model? Is the classical economist more or less optomistic than Solow? How do the economists differ in their modeling of growth and their policy recommendations to promote growth? How do they treat population growth and technology advancement (endogenous/exogenous)? Consider the context in which the different models were developed.