Unused talents gives you no advantage over someone who has no talent at all.

...we all know that in all matters of mere opinion that [every] man is insane-just as insane as we are...we know exactly where to put our finger upon his insanity: it is where his opinion differs from ours....All Democrats are insane, but not one of them knows it. None but the Republicans. All the Republicans are insane, but only the Democrats can perceive it. The rule is perfect: in all matters of opinion our adversaries are insane.

A marriage. . .will give a new gladness to the sunshine, a new fragrance to the flowers, a new beauty to the earth, and a new mystery to life.

Eventually, I sickened of people, myself included, who didn't think enough of themselves to make something of themselves- people who did only what they had to and never what they could have done. I learned from them the infected loneliness that comes at the end of every misspent day. I knew I could do better.

When I am king they shall not have bread and shelter only, but also teachings out of books, for a full belly is little worth where the mind is starved.

Life was a fairy-tale, then, it is a tragedy now. When I was 43 and John Hay 41 he said life was a tragedy after 40, and I disputed it. Three years ago he asked me to testify again: I counted my graves, and there was nothing for me to say. I am old; I recognize it but I don't realize it. I wonder if a person ever really ceases to feel young - I mean, for a whole day at a time.

Never miss an opportunity to shut up.