“For an answer which cannot be expressed the question too cannot be expressed.

The riddle does not exist.

If a question can be put at all, then it can also be answered.”

“How does the philosophical question differ from the non-philosophical question? To philosophize means, we said, to direct one's view toward the totality of the world. So is that a philosophical question (and that alone) which has for its explicit and formal theme the sum-total of all existing things? No! What is peculiar and distinctive about a philosophical question is that it cannot be posed, considered, or answered (so far at least as an answer is possible) without "God and the world" also coming into consideration, that is, the whole of what exists.”

“Scepticism is not irrefutable, but obviously nonsensical, when it tries to raise doubts where no questions can be asked.
For doubt can exist only where a question exists, a question only where an answer exists, and an answer only where something can be said.”

“The purpose of art is expression. Of course this short sentence raises many questions. By itself it is uninformative. One should specify what art can and cannot express. One should specify what art should and should not express. These questions cannot be answered without having some notion of the nature of man. Here it is presupposed that God created man as essentially a rational being. This implies that man’s most valuable expressions are rational and intellectual. Therefore, although man can express emotion, by screaming “Ouch,” art becomes more human and valuable in proportion to its intellectual content. This does not deny that excellent technique may express triviality, evil, and insanity. It asserts, however, that what should be expressed is rational and intelligent.”

“"How to test?" is a question that cannot be answered in general. "When to test?" however, does have a general answer: as early and as often as possible.”

“There are these four ways of answering questions. Which four? There are questions that should be answered categorically [straightforwardly yes, no, this, that]. There are questions that should be answered with an analytical (qualified) answer [defining or redefining the terms]. There are questions that should be answered with a counter-question. There are questions that should be put aside. These are the four ways of answering questions.”

“A man may fulfil the object of his existence by asking a question he cannot answer, and attempting a task he cannot achieve.”

“Remember, an easy question can have an easy answer. But a hard question must have a hard answer. And for the hardest questions of all, there may be no answer - except faith.”

“In examinations the foolish ask questions that the wise cannot answer.”

“What do I want?
The answer to that question does not exist.”