George H.W. Bush, 92, the 41st president of United States between 1989 to 1993, has been hospitalized in Houston as he is suffering from pneumonia; however his sickness hasn't stopped the high-spirited former president to share a picture of father-son moments. George H.W. Bush tweeted a photo Thursday with a very special visitor, his son and former President George W. Bush. 

George H.W. Bush, who was admitted to Houston Methodist Hospital last Friday for treatment of a persistent cough, hasn't been keeping too well this year. This is the second time this year that he has been admitted to the hospital for pneumonia. There had been no improvement in his health condition and he would remain in the hospital till at least Friday, his spokesperson told CBS News.

ReadGeorge HW Bush In Stable Condition But In Intensive Care During Trump's Inauguration

Earlier this month, former President Bill Clinton visited George H.W. Bush in Houston, Texas, for their annual lunch. The duo caught up on some good time as Clinton had tweeted a photo.

As of 2013, George H. W. Bush, had an estimated net worth of $25 million. Bush came from a family with a tradition of public service. He graduated from Yale University, after which, he and his family moved to West Texas. He joined the oil industry and by the age of 40, he had already become a millionaire. He married Barbara Pierce George in 1945, with whom he has six children named George, Pauline, John, Neil, Marvin and Dorothy. 

George and Barbara Bush live in Houston, and also own the famous family compound in Kennebunkport, Maine, which is also their summer home. The home, which is is owned by the Walker’s Point Family Limited Partnership, was worth $8.4 million in 2010 and the Bush family paid $53,000 in taxes annually. The main home was built in 1920 and has 7,000 square feet, Seacoastonline reported. 

According to a report of the New York Times in 1988, George H. W. Bush was not that wealthy as he was thought to be because of his bearing, his privileged upbringing and his years in the oil business in Texas. Although, he was affluent with holdings worth slightly more than $2 million, he was not as rich as former President Ronald Reagan, who was likely worth almost $4 million when he became president. And Reagan's wealth was far less than the Roosevelts, the Kennedys or other politicians with huge family fortunes.

Since the time Bush entered public office, his holdings did not keep pace with inflation. Most of the increase in his assets in 1980s resulted from buying and selling houses when he and his family moved. ''Making money - that hasn't been part of his life's work at all,'' Bush's brother Jonathan — an investment manager in New York City who handled George Bush's investments for a time — had told the Times. ''He had enough money to be in a public career, and that's all that mattered to him," Jonathan had said.

In the recent few years, Bush has been suffering with health issues. He revealed several years ago that he suffered with a form of Parkinson's disease that deprived him from walking. He uses a wheelchair or a scooter to get around. In December 2014, he was hospitalized after experiencing shortness of breath, and the following July he fell at his home in Kennebunkport, breaking the C2 vertebrae in his neck. However, the injury did not result in any neurological problems, his spokesman had said at the time, according to CNN.

Few days before President Donald Trump's inauguration ceremony, both Bush and Barbara were admitted to hospital. Bush was not expected to attend the ceremony due to health reasons. He had also sent a letter Jan. 10, apologizing for missing the ceremony and saying that he and Barbara "wish you the very best as you begin this incredible journey of leading our great country."  Trump had responded on Twitter, wishing the couple a speedy recovery and thanking them for their note, according to reports.