Ali Abdullah Saleh gave his first televised address Thursday since suffering serious injuries during an attack on his presidential palace in early June, dpa reported.
Burns were clearly visible on his face. He said they had required eight operations.
The message was aired from a military hospital in Saudi Arabia, where the Yemeni president and other officials are receiving treatment.
He appeared thin and did move not his arms, which were bandaged.
"We call on all factions for dialogue to reach acceptable results. We are opened for partnership with all parties on the basis of democracy," Saleh said in a brief statement.
He added he remains "defiant."
Yemen has seen massive uprisings for the bulk of this year as a popular uprising has sought to unseat Saleh, who has remained despite promising to go several times.
He said the June 3 bomb attack wounded 87 people, among them his prime minister.
He also thanked the Saudi kingdom for offering the best treatment for him and other Yemeni officials who were injured during the attack.
Yemeni television showed pictures of fireworks as the president was speaking.
"The president needs time until he recovers from the serious wounds and burns he sustained from the terrorist attack," Deputy Information Minister Abdo Jaladi, told the Dubai-based Al Arabiya television, when asked when the president will return to Yemen.