"Always look on the bright side of life."

"The only reason there isn't life on other planets is because their scientists were more advanced than ours."

"Take only pictures, steal only time, leave only footprints."

"No, I'm not offended by all the dumb blonde jokes because I know I'm not dumb, and I also know I'm not blonde."

"I'm a scientist; nothing shocks me."

"Laugh and the world laughs with you; Weep and you weep alone; For the sad old earth must borrow its mirth, but has trouble enough of its own."

"Those who dona€?t build must burn. Ita€?s as old as history and juvenile delinquence."

"When you are unhappy, is there anything more maddening than to be told that you should be contented with your lot?"

"He said not 'Thou shalt not be tempested, thou shalt not be travailed, thou shalt not be dis-eased'; but he said, 'Thou shalt not be overcome.'"

"Archaeology is the search for fact... not truth. If it's truth you're looking for, Dr. Tyree's philosophy class is right down the hall."

"If everybody's thinking alike, somebody isn't thinking."

"Love is indescribable and unconditional. I could tell you things that it is not, but not one that it is. Either you have it or you haven't; there's not proof of it."