He who loves God cannot endeavor that God should love him in return.

Nature offers nothing that can be called this man's rather than another's; but under nature everything belongs to all.

As men's habits of mind differ, so that some more readily embrace one form of faith, some another, for what moves one to pray may move another to scoff, I conclude ... that everyone should be free to choose for himself the foundations of his creed, and that faith should be judged only by its fruits.

The endeavor to understand is the first and only basis of virtue.

Men will find that they can ... avoid far more easily the perils which beset them on all sides by united action.

A good thing which prevents us from enjoying a greater good is in truth an evil.

I do not know how to teach philosophy without becoming a disturber of established religion.