In order to fly

"In order to fly,

 all one must do

 is simply miss

 the ground." - Douglas Adams

The fact that we live at the bottom of a deep gravity well

“The fact that we live at the bottom of a deep gravity well, on the surface of a gas covered planet going around a nuclear fireball 90 million miles away and think this to be normal is obviously some indication of how skewed our perspective tends to be.” - Douglas Adams

Design something foolproof

"A common mistake that people make when trying to design

something completely foolproof is to underestimate the

ingenuity of complete fools." - Douglas Adams

In the beginning

"In the beginning the Universe was created. This
has made a lot of people very angry and been
widely regarded as a bad move." - Douglas Adams