“She sowed in my mind the idea that reality is not only what we see on the surface; it has a magical dimension as well and, if we so desire, it is legitimate to enhance it and color it to make our journey through life less trying.” 

“Thinking is a sacred disease and sight is deceptive.” 

“The soul is dyed the color of its thoughts. Think only on those things that are in line with your principles and can bear the light of day. The content of your character is your choice. Day by day, what you do is who you become. Your integrity is your destiny - it is the light that guides your way.” 

“Stop thinking all the time that you’re in the way, that you’re bothering the person next to you. If people don’t like it, they can complain. And if they don’t have courage to complain, that’s their problem.”

 “If you think adventure is dangerous, try routine: it is lethal.” 

 “The simple things are also the most extraordinary things, and only the wise can see them.”

I think you can have 10,000 explanations for failure, but no good explanation for success.

You're always learning. The problem is, sometimes you stop and think you understand the world. This is not correct. The world is always moving. You never reach the point you can stop making an effort.

“The act of discovering who we are will force us to accept that we can go further than we think.” 

Thinking is mostly just asking yourself questions and answering them.

Though you can upgrade your brain domestically, traveling and relocating provides unique conditions that make progress much faster.

“Ow! My brains!” 

“I think fish is nice, but then I think that rain is wet, so who am I to judge?” 

“The last ever dolphin message was misinterpreted as a surprisingly sophisticated attempt to do a double-backwards-somersault through a hoop whilst whistling the 'Star Spangled Banner', but in fact the message was this: So long and thanks for all the fish.” 

“I think you ought to know I'm feeling very depressed.” 

“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.” 

Life is wasted on the living.

“I may not have gone where I intended to go, but I think I have ended up where I needed to be.” 

I think you get most of the most interesting work done in fields where people don't think they're doing art but are merely practicing a craft and working as good craftsmen. Being literate as a writer is good craft, is knowing your job, is knowing how to use your tools properly and not to damage the tools as you use them.

I think that growing up in a crowded continent like Europe with an awful lot of competing claims, ideas... cultures... and systems of thought, we have, perforce, developed a more sophisticated notion of what the word 'freedom' means than I see much evidence of in America.

If somebody thinks they're a hedgehog, presumably you just give 'em a mirror and a few pictures of hedgehogs and tell them to sort it out for themselves.

“Yes, it is true that sometimes unusually intelligent and sensitive children can appear to be stupid. But stupid children can sometimes appear to be stupid as well. I think that's something you might have to consider.” 

“Anything that thinks logically can be fooled by something else that thinks at least as logically as it does.” 

“Perhaps I'm old and tired, but I always think that the chances of finding out what really is going on are so absurdly remote that the only thing to do is to say hang the sense of it and just keep yourself occupied.”