Humoring them costs nothing and adds to happiness in a world in which happiness is always in short supply.

Age does not bring wisdom... but it does give perspective... and the saddest sight of all is to see, far behind you, temptations you've resisted.

English is capable of defining sentiments that the human nervous system is quite incapable of experiencing.

His older self had taught his younger self a language which the older self knew because the younger self, after being taught, grew up to be the older self and was, therefore, capable of teaching.

Men are expendable; women and children are not. A tribe or a nation can lose a high percentage of its men and still pick up the pieces and go on ... as long as the women and children are saved.

Brainpower is the scarcest commodity and the only one of real value.

Nobody has ever seen an electron. Nor a thought. You can't see a thought, you can't measure, weigh, nor taste it- but thoughts are the most real things in the Galaxy.