It is worthwhile for one to make an effort to achieve happiness. Just as the purpose of a plant is to grow, so it is that the main purpose of every human being is to survive and to grow until death.
The world is not looking for servants, there are plenty of these, but for masters, men who form their purposes and then carry them out, let the consequences be what they may.
The clash between science and religion has not shown that religion is false and science is true. It has shown that all systems of definition are relative to various purposes, and that none of them actually “grasp” reality.
Though the Life Force supplies us with its own purpose, it has no other brains to work with than those it has painfully and imperfectly evolved in our heads.
There will come a time when everybody will know why, for what purpose, there is all this suffering, and there will be no more mysteries. But now we must live ... we must work, just work!