Read the following paragraph and determine if the hypothesis is true:

Enrique Leff (born Mexico, 1946) is a Mexican economist, who defines himself today as an environmental sociologist and environmentalist. He has written 25 books and 180 articles on political ecology, environmental sociology, environmental economics, environmental epistemology and environmental education. He is regarded as one of the key environmental thinkers in Latin America.

Hypothesis: Enrique Leff was born in the 20th century
Yes