Who said "In understanding heredity, we understand ourselves."?

This quote is attributed to Wilhelm Johannsen.

In understanding heredity, we understand ourselves. - Wilhelm Johannsen

"In understanding heredity, we understand ourselves."

Wilhelm Johannsen

Geneticist and Botanist Danish 1857–1927

"Genetics is the science of heredity, and heredity is the fundamental principle of life."

"The gene is the unit of heredity, but it is not the unit of evolution."

"Nature does nothing suddenly, and gradualism is the law of change."

"Pure lines are the foundation of scientific breeding."