All human actions have one or more of these seven causes: chance, nature, compulsion, habit, reason, passion, and desire.

Get off your butt and join the Marines!

Never accept a drink from a urologist.

Every man's memory is his private literature.

Christmas to a child is the first terrible proof that to travel hopefully is better than to arrive.

An intense anticipation itself transforms possibility into reality; our desires being often but precursors of the things which we are capable of performing.

I got rabies shots for biting the head off a bat but that`s OK - the bat had to get Ozzy shots.

There's real poetry in the real world. Science is the poetry of reality

Religion is like a knife: you can either use it to cut bread, or stick in someone's back.

I've always had an obligation to creation, above all.

Everything is vague to a degree you do not realize till you have tried to make it precise.

Don't tell me the moon is shining; show me the glint of light on broken glass.

Memory... is an internal rumour.

He who would accomplish little must sacrifice little; he who would achieve much must sacrifice much; he who would attain highly must sacrifice greatly.

I apologize for lying to you. I promise I won't deceive you except in matters of this sort.

The only thing worse than being blind is having sight but no vision.

When one door is closed, don't you know that many more are open

Any product that needs a manual to work is broken.

Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Rich men's houses are seldom beautiful, rarely comfortable, and never original. It is a constant source of surprise to people of moderate means to observe how little a big fortune contributes to Beauty.

Do it again on the next verse, and people think you meant it.