Every age has its beautiful moments.

However we select from nature a complex [of phenomena] using the criterion of simplicity, in no case will its theoretical treatment turn out to be forever appropriate (sufficient).... I do not doubt that the day will come when [general relativity], too, will have to yield to another one, for reasons which at present we do not yet surmise. I believe that this process of deepening theory has no limits.

The devil has put a penalty on all things we enjoy in life. Either we suffer in our health, or we suffer in our soul, or we get fat.

I am enough of an artist to draw freely upon my imagination.

A model should be as simple as it can be but no simpler

As to science, we may well define it for our purpose as "methodical thinking directed toward finding regulative connections between our sensual experiences".

God Almighty does not throw dice.