Lewis has lectured and taught at multiple major academic institutions, medical centers and business schools.

He also lectured at Brooklyn College and other institutions.

He retired from teaching in 1983 but continued to lecture at institutions in both North and South America.

She also lectures at other universities and cultural institutions globally.

Amity Shlaes has lectured at numerous institutions, academic and otherwise.

Ehrenkrantz has lectured at institutions of higher education throughout the country.

He also a public speaker who has lectured at high schools, colleges, conferences, community centers and religious institutions.

He also taught and lectured about Latin music and culture at various educational institutions.

He also lectured at other institutions and universities.

He lectures to the industry, to corporate trade associations and at academic institutions.