Michio Kaku

“I have nothing against investment banking, but it's like massaging money rather than creating money.”

“When we're born, we want to know why the stars shine. We want to know why the sun rises.”

“Science fiction without the science just becomes, you know, sword and sorcery, basically stories about heroism and not much more.”

“I predict that technology will enable people to transmit their neuronal, actual feelings over the Internet.”

“In Einstein's equation, time is a river. It speeds up, meanders, and slows down. The new wrinkle is that it can have whirlpools and fork into two rivers. So, if the river of time can be bent into a pretzel, create whirlpools and fork into two rivers, then time travel cannot be ruled out.”

“One day I went up to my mom and I said, 'Mom, can I have permission to build a 2.3-million electron-volt atom smasher - a betatron - in the garage?' And my mom stared at me, and she said, 'Sure. Why not? And don't forget to take out the garbage.'”

“I believe that science is the engine of prosperity, that if you look around at the wealth of civilization today, it's the wealth that comes from science.”

“One day when I was 8 years old, everyone was talking in hushed tones about a great scientist that had just died. His name was Albert Einstein.”

“Now, we used to think the brain was like a computer. But now, we realize that's not true. There's no programming of the brain. There's no Windows. And we think the brain is more like a large corporation. Because think of the unconscious mind. In a corporation, you have subdivisions which operate independently of the main office.”

“Until computers and robots make quantum advances, they basically remain adding machines: capable only of doing things in which all the variables are controlled and predictable.”

“The human brain has 100 billion neurons, each neuron connected to 10 thousand other neurons. Sitting on your shoulders is the most complicated object in the known universe.”

“I vowed to myself that when I grew up and became a theoretical physicist, in addition to doing research, I would write books that I would have liked to have read as a child. So whenever I write, I imagine myself, as a youth, reading my books, being thrilled by the incredible advances being made in physics and science.”

“Years ago, I picked up figure skating. How hard could spins and jumps be, I thought? It's just applied Newtonian physics. After repeatedly falling on my rear end, I realized it was harder than I thought. But it had an upside. That is how I met my wife, who was ice dancing at the Rockefeller Center ice rink.”

“I have concluded that we are in a world made by rules created by an intelligence.”

“Something as superfluous as "play" is also an essential feature of our consciousness. If you ask children why they like to play, they will say, "Because it's fun." But that invites the next question: What is fun? Actually, when children play, they are often trying to reenact complex human interactions in simplified form. Human society is extremely sophisticated, much too involved for the developing brains of young children, so children run simplified simulations of adult society, playing games such as doctor, cops and robber, and school. Each game is a model that allows children to experiment with a small segment of adult behavior and then run simulations into the future. (Similarly, when adults engage in play, such as a game of poker, the brain constantly creates a model of what cards the various players possess, and then projects that model into the future, using previous data about people's personality, ability to bluff, etc. The key to games like chess, cards, and gambling is the ability to simulate the future. Animals, which live largely in the present, are not as good at games as humans are, especially if they involve planning. Infant mammals do engage in a form of play, but this is more for exercise, testing one another, practicing future battles, and establishing the coming social pecking order rather than simulating the future.)”

“In science fiction, telepaths often communicate across language barriers, since thoughts are considered to be universal. However, this might not be true. Emotions and feelings may well be nonverbal and universal, so that one could telepathically send them to anyone, but rational thinking is so closely tied to language that it is very unlikely that complex thoughts could be sent across language barriers. Words will still be sent telepathically in their original language.”

“In string theory, all particles are vibrations on a tiny rubber band; physics is the harmonies on the string; chemistry is the melodies we play on vibrating strings; the universe is a symphony of strings, and the 'Mind of God' is cosmic music resonating in 11-dimensional hyperspace.”

“‎By 2100, our destiny is to become like the gods we once worshipped and feared. But our tools will not be magic wands and potions but the science of computers, nanotechnology, artificial intelligence, biotechnology, and most of all, the quantum theory.”

“It turns out that the left temporal lobe, if there's a lesion there, will create hyper-religiosity. People become super-religious. They see demons and spirits everywhere. We think Joan of Arc may have had it.”

“But if I make an observation, what is to determine which state I am in? This means that someone else has to observe me to collapse my wave function.”