How does adding the suffix -able or -ible a verb affect the verb

They convince the reader. Verbs provide justification with force while adjectives don't say all that much. Dee Leopold, Managing Director of MBA of admissions at Harvard Business School, once said, 'The best recommendations have a lot of verbs. hope this helps!!! :)

the old way of life was represented by superstition, an angry god, and absolute submission to authority. the thinkers of the age of reason ushered in a new way of thinking. this new way championed the accomplishments of humankind. individuals did not have to accept despair. science and reason could bring happiness and progress. kings did not rule by divine right. they had an obligation to their subjects. europeans pondered the implications for nearly a century. americans put them into practice first.

answer; humanistic;