“If we will not learn to eat the only food that the universe grows-the only food that any possible universe ever can grow-then we must starve eternally.”

“The only way that we can live, is if we grow. The only way that we can grow is if we change. The only way that we can change is if we learn. The only way we can learn is if we are exposed. And the only way that we can become exposed is if we throw ourselves out into the open. Do it. Throw yourself.”

“There are only certain intervals of time when life of any sort is possible in an expanding universe and we can practise astronomy only during that habitable time interval in cosmic history.”

“...for surely the food that memory gives to eat is bitter to the taste, and it is only with the teeth of hope that we can bear to chew it. (Ayesha)”

“Only by examining our personal biases can we grow as artists; only by cultivating empathy can we grow as people.”

“The Universe has a plan to make sure we don't ever stop learning, not only in our minds, but also in our hearts.”