An idea that is developed and put into action is more important than an idea that exists only as an idea.

We are most nearly ourselves when we achieve the seriousness of the child at play.

The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom.

You have brains in your head. You have feet in your shoes. You can steer yourself in any direction you choose!

Success is not about fitting into society's expectations; it's about honoring your authentic self.

Oh, I wouldn't mind, Hazel Grace. It would be a privilege to have my heart broken by you.

“Self-complacency is fatal to progress.”