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Quote by Evangelista Torricelli

“winds are produced by differences of air temperature, and hence density, between two regions of earth.”

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Evangelista Torricelli was an Italian physicist known for his work on fluid mechanics and the discovery of the vacuum. He is considered one of the founders of hydrostatics and invented the Torricelli tube, the first instrument capable of measuring atmospheric pressure. His contributions had a profound impact on scientific discoveries. more

“Please stop using the word "Negro."... We are the only human beings in the world with fifty-seven variety of complexions who are classed together as a single racial unit. Therefore, we are really truly colored people, and that is the only name in the English language which accurately describes us.”

People World Humans Together Names Language Human Beings Race Please Seven Variety Fifty Units English Language Complexion

Author:Mary Church Terrell

“... no young colored person in the United States today can truthfully offer as an excuse for lack of ambition or aspiration that members of his race have accomplished so little, he is discouraged from attempting anything himself. For there is scarcely a field of human endeavor which colored people have been allowed to enter in which there is not at least one worthy representative.”