If [science] tends to thicken the crust of ice on which, as it were, we are skating, it is all right. If it tries to find, or professes to have found, the solid ground at the bottom of the water it is all wrong. Our business is with the thickening of this crust by extending our knowledge downward from above, as ice gets thicker while the frost lasts; we should not try to freeze upwards from the bottom.

People are always good company when they are doing what they really enjoy.

There is no permanent absolute unchangeable truth; what we should pursue is the most convenient arrangement of our ideas.

Neither have they hearts to stay, nor wit enough to run away.

I fall asleep in the full and certain hope That my slumber shall not be broken; And that, though I be all-forgetting, Yet shall I not be all-forgotten, But continue that life in the thoughts and deeds of those I have loved.

It is death, and not what comes after death, that men are generally afraid of.

Our own death is a premium which we must pay for the far greater benefit we have derived from the fact that so many people have not only lived but also died before us.