Then, and not till then, the mainspring of selfishness will be broken.
You see, the mainspring of her nature must have been vanity.
This gave rise to the invention of the stack-freed and fusee, both contrivances to equalize the power of the mainspring.
But, losing her brother, the mainspring of her life seemed broken.
It is basic, the mainspring of human endeavour and human advancement, rooted in nations and individuals by God.
The navy was the mainspring of Victoria in more ways than one.
There is the care of the mainspring I have intentionally reserved till the last.
Mentally he was wondering if this was the mainspring of conduct in all women.
All the old restraints were wanting, and self-interest alone formed the mainspring of action.
Perhaps this had originally been the mainspring of the understanding between them.