If you sit down and think about it sensibly, you come up with some very funny ideas. Like: why make people inquisitive, and then put some forbidden fruit where they can see it with a big neon finger flashing on and off saying 'THIS IS IT!'? ... I mean, why do that if you really don't want them to eat it, eh? I mean, maybe you just want to see how it all turns out. Maybe it's all part of a great big ineffable plan. All of it. You, me, him, everything. Some great big test to see if what you've built all works properly, eh? You start thinking: it can't be a great cosmic game of chess, it has to be just very complicated Solitaire.
Beyond work and love, I would add two other ingredients that give meaning to life. First, to fulfill whatever talents we are born with. However blessed we are by fate with different abilities and strengths, we should try to develop them to the fullest, rather than allow them to atrophy and decay. We all know individuals who did not fulfill the promise they showed in childhood. Many of them became haunted by the image of what they might have become. Instead of blaming fate, I think we should accept ourselves as we are and try to fulfill whatever dreams are within our capability.
Second, we should try to leave the world a better place than when we entered it. As individuals, we can make a difference, whether it is to probe the secrets of Nature, to clean up the environment and work for peace and social justice, or to nurture the inquisitive, vibrant spirit of the young by being a mentor and a guide.