What is the most famous quote by Mark Horton ?

The most unknown, unused and unrecognised tool of the human mind, is the recognition that attitude is always a choice

— Mark Horton

The most astonishing Mark Horton quotes that are little-known but priceless

Following is a list of the best Mark Horton quotes, including various Mark Horton inspirational quotes, and other famous sayings by Mark Horton.