The main difference between people seems to be that one man can come under obligations on which you can rely--is obligable--and another is not.

As he has not a law within him, there's nothing to tie him to .-- EMERSON.
"Father," said Teddy to Lord Newhaven, "do--do be a horse, and I will ride you in the water." "Me, too," said Pauly.
"I am not anxious to be a horse, Teddy.

I'm quite content as I am." Lord Newhaven was stretched in an easy but undefensive attitude on the heathery bank, with his hands behind his head.

His two sons rushed simultaneously at him and knelt on his chest.
"Promise!" they cried, punching him.

"Two turns each." There was a free fight, and Lord Newhaven promised.
"Honor bright! Two turns each, and really deep!" "Honor bright," said Lord Newhaven.
His two sons got off his chest, and Teddy climbed on his back in readiness, as his father sat up and began to unlace his boots.
"Higher!" said Teddy, over his shoulder, his arms tightly clasped round his father's neck, as Lord Newhaven rolled up his trousers.
"You young slave-driver, they won't go up any higher." "You said 'honor bright.'" "Well, Shylock, I _am_ 'honor bright.'" "You had them over your knees last time." "I had knickerbockers on, then." "Won't these do the same ?" "They won't come up another inch." "Then one, two, three--off!" shrieked Teddy, digging his heels into the parental back.
The horse displayed surprising agility.