“Really care about the tools you use because they are what make you your best.”

“Use them with care, and use them with respect as to the transformations they can achieve, and you have an extraordinary research tool. Go banging about with a psychedelic drug for a Saturday night turn-on, and you can get into a really bad place, psychologically. Know what you're using, decide just why you're using it, and you can have a rich experience. They're not addictive, and they're certainly not escapist, either, but they're exceptionally valuable tools for understanding the human mind, and how it works.”

“If someone tries to use you as a tool, you shouldn't mind it, because it is their choice and folly, not yours.”

“The market is a tool, and a useful one. But the worship of this tool is a hollow faith. Far more important than any tool is what you make with it.”

“I used to use business to make money. But I've learned that business is a tool. You can use it to support what you believe in.”

“If you care about something enough, it’s going to make you cry. But you have to use it. Use your tears. Use your pain. Use your fear. Get mad. Arnold, get mad.”