Who said "The human brain is like a knife: it wears away with use."?

This quote is attributed to Voltaire.

The human brain is like a knife: it wears away with use. - Voltaire

"The human brain is like a knife: it wears away with use."

Voltaire Knowledge

Writer Philosopher French 1694–1778

"It is dangerous to be right when the government is wrong."

"Life is thickly sown with thorns, and I know no other remedy than to pass quickly through them."

"The perfect is the enemy of the good."

"Judge a man by his questions rather than by his answers."

"We're not just after treasure. We're preserving history."

"The mind is humanity's greatest tool."

"A tidy room reflects a tidy mind."

"You can learn a lot about a person by how they keep their space."