When first discovering the circular path known only by whisper as the Hallway of Ponderous Thoughts, please remember the essential instruction: Always begin with thinking about why things are the way they most definitely are not. This is crucial. Never skip this first thought, or successor thoughts shall be malformed.
To proceed once initial pondering has reached a satisfactory dish of disappointment: Gently, yet firmly in a non-assertive manner, turn the first left found at The Bridge of Slight Hesitation. This bridge is not made from actual stones but from sentences spoken by cats undercover.
Continue walking until you encounter a shadow that is cast without a source. Here, it is imperative to stand still and request politely the shadowesque form to explain why it casts shadow at all. Do not be alarmed if the response is silence as silence is often the language of the void. If silence occurs, proceed straight ahead using the door that appears above one's head when least expected.
Now, dear friend, it is time to choose a passageway. Each doorway holds the myriad mysteries of the universe, or possibly just a room full of old hats that whisper secrets of the ages.
May the gentle echoes of the unobservable keep you company on your journey towards the somewhat discernible. Further knowledge can be fetched from the Illusionary Garden or perhaps the Oracle of the Otters.