“A straight line may be the shortest distance between two points, but it is by no means the most interesting.”

“There’s always something to look at if you open your eyes.”

 - The Fifth Doctor, Kinda (1982)

“Small though it is, the human brain can be quite effective when working at full efficiency.”

“I love humans. Always seeing patterns in things that aren’t there."

“Never give up. Never give in.”

“Some people live more in 20 years than others do in 80. It’s not the time that matters. It’s the person.”

“Do you know what thinking is? It’s just a fancy word for changing your mind.”

“Every great decision creates ripples, like a huge boulder dropped in a lake. The ripples merge, rebound off the banks in unforeseeable ways. The heavier the decision, the larger the waves, the more uncertain the consequences.”

“The very powerful and the very stupid have one thing in common. They don’t alter their views to fit the facts, they alter the facts to fit their views.”

“The way I see it, every life is a pile of good things and bad things. Hey. The good things don’t always soften the bad things, but vice-versa, the bad things don’t necessarily spoil the good things and make them unimportant.”

“The least important things, sometimes, my dear boy, lead to the greatest discoveries.”

 - The First Doctor, The Space Museum (1965)

“Time travel is like visiting Paris. You can’t just read the guidebook, you’ve got to throw yourself in. Eat the food, use the wrong verbs, get charged double and end up kissing complete strangers.”