President Evo Morales of Bolivia said Wednesday that Hugo Chávez, the cancer-stricken president of Venezuela and one of his closest friends, had endured “most difficult moments” and that Mr. Chávez’s doctors and family were encouraged now that he had returned home, more than two months after surgery and convalescence in Cuba. Speaking to reporters at the United Nations, Mr. Morales said he had not seen Mr. Chávez while visiting Venezuela on Tuesday, a day after the Venezuelan leader’s surprise predawn homecoming. “Yesterday I tried to visit, we spoke with his doctors, he’s resting, he’s still in treatment,” Mr. Morales said, speaking in Spanish. “We talked to the family, the family fortified, of course, the presence of Chávez in Caracas, Venezuela.”