Quote by Frege, Gottlob

"A thought is a proposition which we apprehend."

"The word 'number' is surely not without a sense; but when we have the sentence 'the number of roots of this equation is four', it seems very difficult to give the meaning of the word 'number' here."

"Functions are concepts; concepts are functions."

"The content of a thought may have different kinds of parts."

"Education opens doors."

"Education opens doors to endless possibilities."

"I ain't got the education you got, bub."

"You can't put a price on history."