The only thing that never changes is that everything changes.

There have always been hard times. There have always been wars and troubles

Nobody got anywhere in this world by simply being content.

when guns are outlawed only the outlaws will have guns.

A man in his life may have many teachers, some most unexpected. The question lies with the man himself: Will he learn from them?

I have read my books by many lights, hoarding their beauty, their wit or wisdom against the dark days when I would have no book, nor a place to read. I have known hunger of the belly kind many times over, but I have known a worse hunger: the need to know and to learn.

Dogma is invariably wrong, as knowledge is always in a state of transition.