“My mentality is that of a samurai. I would rather commit seppuku than fail.”

“I have made the mistaken assumption - and I will attempt to be better at this - of thinking that because somebody is on Twitter and is attacking me that it is open season. And that is my mistake.”

“I started SpaceX with the expectation of failure.”

“Even if producing CO2 was good for the environment, given that we're going to run out of hydrocarbons, we need to find some sustainable means of operating.”

“Optimism, pessimism, f**k that; we're going to make it happen. As God is my bloody witness, I'm hell-bent on making it work.”

“We have embraced the 21st century by entering such cutting-edge industries as brick, carpet, insulation and paint. Try to control your excitement.”

“Marketing is about values. It's a complicated and noisy world, and we're not going to get a chance to get people to remember much about us. No company is. So we have to be really clear about what we want them to know about us.”

“You know, I've got a plan that could rescue Apple. I can't say any more than that it's the perfect product and the perfect strategy for Apple. But nobody there will listen to me.”

“There is no such sport as sport by sport o'erthrown.”

“The Golcondas were considered incomparably the best team in Southern India ... [But] we defeated [them] by 9 goals to 3. On succeeding days we made short work of all other opponents, and established the record, never since broken, of winning a first-class tournament within fifty days of landing in India.”

“Inside the Great Mystery that is, we don't really own anything. What is this competition we feel then, before we go, one at a time, through the same gate?”

“All life is an experiment. The more experiments you make the better.”

“The Good Spirit never cared for the colleges, and though all men and boys were now drilled in Greek, Latin, and Mathematics, it had quite left these shells high on the beach, and was creating and feeding other matters [science] at other ends of the world.”

“Nature is a rag-merchant, who works up every shred and ort and end into new creations; like a good chemist, whom I found, the other day, in his laboratory, converting his old shirts into pure white sugar.”