We accumulate our opinions at an age when our understanding is at its weakest.

Even truth needs to be clad in new garments if it is to appeal to a new age.

We cannot remember too often that when we observe nature, and especially the ordering of nature, it is always ourselves alone we are observing.

I cannot say whether things will get better if we change what I can say is they must change if they are to get better.

Never undertake anything for which you wouldn't have the courage to ask the blessings of heaven.

Much can be inferred about a man from his mistress: in her one beholds his weaknesses and his dreams.

What is the good of drawing conclusions from experience? I don't deny we sometimes draw the right conclusions, but don't we just as often draw the wrong ones?

God created man in His own image, says the Bible philosophers reverse the process: they create God in theirs.

The pleasures of the imagination are as it were only drawings and models which are played with by poor people who cannot afford the real thing.

Everyone is a genius at least once a year. The real geniuses simply have their bright ideas closer together.