Literacy is defined as the ability to read and write as well as having knowledge and competence in a subject. Literacy provides many benefits such as economic growth, reduced poverty and crime, and empowerment. Without literacy, people have difficulty participating in society and understanding others, and countries have problems with their workforce and economy. Social entrepreneurs like John Wood and Greg Mortenson have sacrificed their time and energy to help promote literacy for less fortunate people through building schools. Individuals can help promote literacy by donating books, supporting literacy organizations, and volunteering to teach others.