"Darn the wheel of the world! Why must it continually turn over? Where is the reverse gear?"

This quote by Jack London reveals a sensation of aggravation and vulnerability in the face of life's unavoidable modifications. It recommends that life resembles a wheel that is constantly turning, and that there is no other way to stop it or reverse its instructions. The speaker is asking why life should be this way, and why there is no way to manage it. He is regreting the lack of control he has over his own life, and the truth that he can not go back and undo the past. This quote speaks with the concept that life is unpredictable which we should accept the modifications that come our way. It also works as a tip that we should take advantage of the present minute, as it will soon be gone.