Patriotism varies, from a noble devotion to a moral lunacy.

Man will never be entirely willing to give up this world for the next nor the next world for this.

It is useless for the sheep to pass resolutions in favor of vegetarianism, while the wolf remains of a different opinion.

If the universe is running down like a clock, the clock must have been wound up at a date which we could name if we knew it. The world, if it is to have an end in time, must have had a beginning in time.

Deliberate cruelty to our defenceless and beautiful little cousins is surely one of the meanest and most detestable vices of which a human being can be guilty.

They who will live for others shall have great troubles, but they shall seem to them small. Those who will live for themselves shall have small troubles, but they shall seem to them great.

No healthy civilization can ever be reared on a foundation of devitalized work.