Imagination is a powerful agent for creating, as it were, a second nature out of the material supplied to it by actual nature.

I am myself by inclination an investigator.

So act that anything you do may become universal law.

Men will not understand ... that when they fulfil their duties to men, they fulfil thereby God's commandments; that they are consequently always in the service of God, as long as their actions are moral, and that it is absolutely impossible to serve God otherwise.

Among all nations, through the darkest polytheism glimmer some faint sparks of monotheism.

We find that the more a cultivated reason devotes itself to the aim of enjoying life and happiness, the further does man get away from true contentment.

Dare to know! Have the courage to use your own intelligence!