" Many of the qualities that come so effortlessly to dogs – loyalty, devotion, selflessness, unflagging optimism, unqualified love – can be elusive to humans. "
- John Grogan

In this quote, John Grogan highlights the natural virtues that dogs exhibit effortlessly. Dogs are often praised for their unwavering loyalty and devotion to their owners, as well as their selfless nature and unending optimism in life's challenges. Additionally, they are known for offering unconditional love without expecting anything in return.

The deeper meaning of this quote lies in its reflection on human behavior and the contrasts between humans and dogs regarding these virtues. Grogan suggests that while it may come naturally to dogs to demonstrate loyalty, devotion, selflessness, optimism, and unconditional love, humans sometimes struggle with these qualities. This could imply a critique of modern society's tendency towards self-interest and skepticism. It challenges readers to reflect on their own behaviors and consider how they might improve by emulating the admirable traits that come so naturally to dogs.

John Grogan is an American author best known for his memoir "Marley & Me: Life and Love with the World’s Worst Dog," which was later adapted into a popular movie. The book tells the story of Grogan's experiences raising a challenging yet beloved Labrador Retriever named Marley, providing insight into the joys and frustrations of dog ownership. His work often explores themes of family life, pet care, and the profound impact that pets can have on human lives.