Man is mortal, and as the professor so rightly said mortality can come so suddenly

I don't think you can hold in your mind the full conception of what the world is.

The Earth is an animal that shakes off its fleas when they dig too deep, bite too hard.

How is it possible to write one's autobiography in a world so fast-changing as this?

The mind is more powerful than ever, and you have more control over it than you ever think.

You will always be special to someone. Unless you grow so old, everyone you knew went ahead

Your only real problem is mortality! No religion can solve this problem, but science can do!

Time is a great teacher, but unfortunately it kills all its students."[Letter, November 1856]

We seldom know what echo our actions will find, but our stories will most certainly outlast us.

Death is the only equality guaranteed in life. A poor man will die just as surely as a rich man.

The idea that all souls are mortal is the only notion surely terminating love and all its forms.

The Society wants us to be afraid of dying. But I'm not. I'm only afraid of dying wrong.

Death, only death, can break the lasting chain;And here, ev'n then, shall my cold dust remain

It is difficult to want to tell a grave that it is not immortal. It's so obvious at that point.

Hence, in a season of calm weatherThough inland far we be,Our souls have sight of that immortal sea