"If a person studies too much and exhausts his reflective powers, he will be confused, and will not be able to apprehend even that which had been within the power of his apprehension. For the powers of the body are all alike in this respect"
This quote is written / told by Maimonides between March 30, 1135 and December 13, 1204. He/she was a famous Philosopher from Spain.
The author also have 23 other quotes.