Wise men never grow up; indeed, they grow younger, for they lose the appalling worldly wisdom of youth. - John Buchan

Sir Archibald looked upon the earnest flushed face of Dickson with admiration. “I’m blessed if you’re not the most whole-hearted brigand I’ve ever struck.”“I’m not. I’m just a business man.”
“Do you realize that you’re levying a private war and breaking every law of the land?”
“Hoots!” said Dickson. “I don’t care a docken about the law. I’m for seeing this job through. What force can you produce?”
“Only cripples , I’m afraid.

You see only the productions of second-rate folk who are in a hurry to get wealth and fame. The true knowledge, the deadly knowledge, is still kept secret. But, believe me, my friend, it is there.

But the big courage is the cold-blooded kind, the kind that never lets go even when you're feeling empty inside, and your blood's thin, and there's no kind of fun or profit to be had, and the trouble's not over in an hour or two but lasts for months and years.