Who said "The mind has no limits when properly trained."?

This quote is attributed to Caroline Herschel.

The mind has no limits when properly trained. - Caroline Herschel

"The mind has no limits when properly trained."

Caroline Herschel

Astronomer German-English 1750–1848

"I am nothing, I have done nothing; all the credit is due to my brother William."

"The eye is never satisfied with seeing, nor the ear filled with hearing."

"Work is the best remedy for sorrow."

"I did the work of a man, but I received the wages of a woman."