By the time you are 88 years old, you "have consumed 300 tons of food, air and water."

I'm not trying to counsel any of you to do anything really special except dare to think. And to dare to go with the truth. And to dare to really love completely.

We are called to be architects of the future, not its victims.

I must reorganize the environment of man by which then greater numbers of men can prosper.

I'm not trying to copy Nature, I'm trying to find the principles she's using.

All children are born geniuses; 9,999 out of every 10,000 are swiftly, inadvertently degeniusized by grownups.

It is essential that anyone reading this book know at the outset that the author is apolitical. I was convinced in 1927 that humanity's most fundamental survival problems could never be solved by politics.