The 71-year-old Scotsman was at SW19 to witness Murray secure a place in the semi-finals by beating Fernando Verdasco, but he was unable to watch his fellow Scot nab a straight-sets victory over Novak Djokovic in the final.
"I got a message from him yesterday and this morning," BBC Sport quotes Murray as saying. "He's going on a cruise up the coast of Scotland so he wasn't able to come.
"It's an unbelievable work ethic for such a long period of time. Spending 15 minutes with him, he's a really impressive guy and you can learn a lot from him."
Murray has become the first British male Wimbledon champion since Fred Perry 77 years ago.