Let this circumstance of our constitution therefore be directed to this noble purpose, and then all the objections urged against it by jealous tyranny and affrighted superstition will vanish.
The purpose of life is undoubtedly to know oneself. We cannot do it unless we learn to identify ourselves with all that lives. The sum-total of that life is God.
There's nothing wrong in suffering, if you suffer for a purpose. Our revolution didn't abolish danger or death. It simply made danger and death worthwhile.
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.
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.