Frege, Gottlob

"Thought grasps the eternal and unchanging."

"We must abolish the view that meaning is a mental image."

"Logic reveals the structure that all valid reasoning must follow."

"The realm of sense is populated by thoughts, which are abstract entities."

"To understand mathematics is to understand the deepest logical truths."

"Clarity is the prerequisite for all genuine knowledge."

"We ascertain truth not through feeling but through proof."

"The name is arbitrary; the sense it expresses is necessary."

"Objects and concepts are ontologically distinct categories."

"Truth is not what we decide it to be."

"The logical operator captures the structure of valid inference."

"We must separate the psychological from the logical at every turn."

"Reality has a structure that thought can mirror."

"The meaning transcends the individual utterance."

"Objective knowledge is possible through systematic thought."

"Sense determines reference through the mediation of logical structure."

"The function is the primary logical unit, not the object."

"A thought is best identified with the sense of a sentence. The meaning of a word is the object it designates."

"The distinction between sense and reference is crucial for understanding language and reality."

"We must not confuse the sign with the thing signified."

"To understand a concept, we must examine the conditions under which it can be true."

"Language disguises the thoughts; so that from the external form of the clothes it is impossible to infer the form of the thought they clothe."

"A concept is an object, not a property of objects."

"The transition from thought to language is never transparent; ambiguity lurks in every expression."

"Names are labels, but sense is what makes meaning possible."

"Logic demands precision where ordinary language permits vagueness."

"The function of a name is to stand for an object; the function of a sentence is to express a thought."

"We err when we assume that words always correspond to objects in the world."

"The identity of thoughts across different minds is what allows communication."

"A contradiction reveals that something has gone wrong with our concepts."