Venezuelan president Hugo Chavez turned to philosophy and Twitter to describe his efforts to beat cancer, summoning the words of German philosopher Friedrich Nietzsche.
"I find myself before my highest mountain and my longest walk," Mr Chavez said in a message posted on his Twitter account. "That's how Zarathustra spoke!"
That quoted a passage from Nietzsche's treatise Thus Spoke Zarathustra: A Book for All and None.
Nietzsche's book focuses on a prophet who reflects on his life as he descends from a mountain retreat and returns to mix with mankind. Mr Chavez occasionally quotes the German philosopher in his speeches.
During a visit to Venezuela's largest military fort later, Mr Chavez borrowed a expression from Los Llanos, Venezuela's vast central plains region where he was born, saying he is prepared to confront the difficulties that lie ahead. "The man from the plains is the size of the task before him," Mr Chavez said, recalling anecdotes from his days as a soldier and briefly breaking into song during a live television broadcast.
The broadcast was the president's first public appearance since Saturday. A photograph released by the government showed Mr Chavez, wearing a jumpsuit, doing light aerobics and stretching along with several of his aides and military officers.
Mr Chavez told his aides the government must "project unity to our people amid adversity".
The president did not elaborate on his thoughts regarding the need for unity, but his statements could have been a reaction to suggestions by government opponents that Mr Chavez's illness and its potential consequences are leading to infighting among members of Venezuela's ruling party.
Prominent party members have not engaged in public arguments, but some political analysts expect tensions to rise as they jockey for candidacies in next year's gubernatorial and municipal elections
Mr Chavez's government also said that the president is recovering quickly after undergoing surgery last month that removed a cancerous tumour.