I often think when a man's once past a certain age, the older he grows the tougher he gets, and women the same or more so.

The great advantage about telling the truth is that nobody ever believes it.

What the Church should be telling him [the carpenter] is this: that the very first demand that his religion makes upon him is that he should make good tables.

Nothing goes so well with a hot fire and buttered crumpets as a wet day without and a good dose of comfortable horrors within. The heavier the lashing of the rain and the ghastlier the details, the better the flavour seems to be.

Books... are like lobster shells, we surround ourselves with 'em, then we grow out of 'em and leave 'em behind, as evidence of our earlier stages of development.

The only ethical principle which has made science possible is that the truth shall be told all the time. If we do not penalize false statements made in error, we open up the way for false statements by intention. And a false statement of fact, made deliberately, is the most serious crime a scientist can commit.

To make a deliberate falsification for personal gain is the last, worst depth to which either scholar or artist can descend in work or life.