“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.”

“I had rather eleven died nobly for their country than one voluptuously surfeit out of action.”

“Hear me profess sincerely: had I a dozen sons, each in my love alike, and none less dear than thine and my good Marcius, I had rather have eleven die nobly for their country than one voluptuously surfeit out of action.”

“Britain is A world by itself, and we will nothing pay For wearing our own noses.”

“I remember the thought which occurred to me when some ingenious and spiritual foreigners came to America, was, Have you been victimized in being brought hither?--or, prior to that, answer me this, "Are you victimizable?”

“The rage for road building is beneficent for America, where vast distance is so main a consideration in our domestic politics andtrade, inasmuch as the great political promise of the invention is to hold the Union staunch, whose days already seem numbered by the mere inconvenience of transporting representatives, judges and officers across such tedious distances of land and water.”

“Luckily for us, now that steam has narrowed the Atlantic to a strait, the nervous, rocky West is intruding a new and continental element into the national mind, as we shall yet have an American genius.”

“I have been long a sleeper; but I trustMy absence doth neglect no great designWhich by my presence might have been concluded.”

“Doubt is a thief that often makes us fear to tread where we might have won.”

“Make use of time, let not advantage slip.”