“There is a certain elegance in wasting time. Any fool can waste money, but when you waste time you waste what is priceless.”

“Don't waste time, waste money. Because you can always get more money.”

“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.”

“Lisa: It just seems a bit of a waste.Ed: Waste of what?Lisa: Waste of time… of life.Ed: That’s the point, isn’t it? To waste time until you die. You have to waste the time.”

“Time you enjoy wasting is not wasted time.”

“Don't waste your time or time will waste you.”