I've put in so many enigmas and puzzles that it will keep the professors busy for centuries arguing over what I meant, and that's the only way of insuring one's immortality. James Joyce
It's the boredom that kills you. You read until you're tired of that. You do crossword puzzles until you're tired of that. This is torture. This is mental torture. Jack Kevorkian
Nothing puzzles me more than time and space and yet nothing troubles me less, as I never think about them. Charles Lamb
If any student comes to me and says he wants to be useful to mankind and go into research to alleviate human suffering, I advise him to go into charity instead. Research wants real egotists who seek their own pleasure and satisfaction, but find it in solving the puzzles of nature. Albert Szent-Györgyi
A logical theory may be tested by its capacity for dealing with puzzles, and it is a wholesome plan, in thinking about logic, to stock the mind with as many puzzles as possible, since these serve much the same purpose as is served by experiments in physical science. Bertrand Russell
When it comes to God's existence, I'm not an atheist and I'm not an agnostic- I'm an acrostic, the whole thing puzzles me. George Carlin