Books are like seeds. They can lie dormant for centuries and then flower in the most unpromising soil.

We are not smart enough to decide which pieces of knowledge are permissible and which are not.

We are star stuff harvesting sunlight.

It is of interest to note that while some dolphins are reported to have learned English - up to fifty words used in correct context - no human being has been reported to have learned dolphinese.

In exchange for freedom of inquiry, scientists are obliged to explain their work.

Looking at fires when high, by the way, especially through one of those prism kaleidoscopes which image their surroundings, is an extraordinarily moving and beautiful experience.

Think of how many religions attempt to validate themselves with prophecy. Think of how many people rely on these prophecies, however vague, however unfulfilled, to support or prop up their beliefs. Yet has there ever been a religion with the prophetic accuracy and reliability of science? ... No other human institution comes close.