"People who worry about looking good typically hide what they don't know, and people who are more concerned with achieving goals expose what they don't know."

"Look at every mistake as an opportunity to learn and improve."

"Pain plus reflection equals progress."

"Mistakes are acceptable if you learn from them; unacceptable if you don't."

"If you're not failing, you're not pushing your limits."

"It is a good rule after reading a new book, never to allow yourself another new one till you have read an old one in between."