Al Jazeera journalist Greste was released on Sunday after 400 days in a Cairo jail and later left Egypt. He is in Cyprus until he travels home to Australia.
He had been sentenced to seven years on charges that included aiding a terrorist group, security officials said.
“This (release) has been like a rebirth,” he said in his first public remarks since he was freed.
Canadian-Egyptian Mohamed Fahmy and Egyptian national Baher Mohamed remain in prison. They were jailed for between seven and 10 years on charges including spreading lies to help a terrorist organisation — a reference to the outlawed Muslim Brotherhood.
The Interior Ministry said on its Facebook page that President Abdel Fattah al-Sisi released Greste under a decree issued in November authorising him to approve the deportation of foreign prisoners.
Greste said if it was appropriate for him to be free, it was right for his two colleagues to be free.
Asked what he would most like to do now, he said: “Watching a few sunsets. I haven’t seen one of those at all for a very long time, watching the stars, feeling the sand under my toes. The little things.”
“You realise it is those little beautiful moments of life that are really precious, and spending time with my family of course. That’s what’s important, not the big issues.”
“This is a massive step forward... I just hope that Egypt keeps going down that path with the others,” Greste told Al-Jazeera in his first interview since leaving prison.
He said he felt a “real mix of emotions” upon hearing that he was to be released.