Our reasonings grasp at straws for premises and float on gossamers for deductions.

The aims of scientific thought are to see the general in the particular and the eternal in the transitory.

I regret that it has been necessary for me in this lecture to administer a large dose of four-dimensional geometry. I do not apologize, because I am really not responsible for the fact that nature in its most fundamental aspect is four-dimensional. Things are what they are.

Every epoch has its character determined by the way its population reacts to the material events which they encounter.

What is morality in any given time or place? It is what the majority then and there happen to like and immorality is what they dislike.

Apart from God every activity is merely a passing whiff of insignificance.

Nobody has a right to speak more clearly than he thinks.