Darwin himself was a really fascinating person, an adventurer as well as a scientist,

Dinosaurs have been incredibly popular for decades,

If you are an adventurer, you will not be interested in where the road goes or where the road ends; you just keep going!

For even the most dehumanized modern fantasies depend on some older and simpler figure; the adventures may be mad, but the adventurer must be sane.

The ideal adventurer needs... the quality of not being content to mind his own affairs...

When is there a boy, even in these materialistic times, to whom the call of the wild and the open road does not appeal? Maybe it is the primitive instinct, anyway it is there. With that key a great door may be unlocked, if it is only to admit fresh air and sunshine into lives that were otherwise grey.
The heroes of the wild, the frontiersmen and explorers, the rovers of the seas, the airmen of the clouds, are pied pipers to the boys. Where they lead the boys will follow and these will dance to their tune when it sings the song of manliness and pluck, of adventure and high endeavors of efficiency and skill, of cheerful sacrifice of self for others. There's meat in this for the boy. There's soul in it.