Spare the rod and spoil the child.

You cannot have a thing "matter" by itself which shall have no motion in it, nor yet a thing "motion" by itself which shall exist apart from matter; you must have both or neither. You can have matter moving much, or little, and in all conceivable ways; but you cannot have matter without any motion more than you can have motion without any matter that is moving.

I believe that he was really sorry that people would not believe he was sorry that he was not more sorry.

Prayers are to men as dolls are to children. They are not without use and comfort, but it is not easy to take them very seriously.

There is a photographer in every bush, going about like a roaring lion seeking whom he may devour.

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.

Whatsoever we perpetrate, we do but row; we are steered by fate.