“Time is given us to be happy and for no other reason [...] When we waste time, we waste happiness.”

“If we don't have time for masterpiece moments, the very reason we came to earth is being wasted on us.”

“We told him to get on with it. We liked wasting time, but almost nothing was more annoying than having our wasted time wasted on something not worth wasting it on.”

“No life is a waste," the Blue Man said. "The only time we waste is the time we spend thinking we're alone.”

“Surely it is a sin to reject the few gifts we are given. Be happy in the flash of time granted to us or hurt forever.”

“Leela: Why are we listening to them? It is a waste of time.The Doctor; It is difficult to know what will be a waste of time until after the time has been wasted, by which time it is too late. So predicting what will be a waste of time is something of a waste of time. Unless it gives you pleasure of course when it probably doesn't count as a waste of time.Leela (yawning): I am sorry I did not hear what you said, Doctor.The Doctor (smiling): That was a waste of time then.”