Clara comes directly from the Latin clarus, meaning bright or clear, and the name is traditionally associated with clarity of both light and thought. It's often read as suggesting straightforwardness -- someone whose intentions are legible rather than obscured, luminous in a plain, unaffected sense rather than a dazzling one.
The cautious soul collaborates with the astral action just as the skilled peasant collaborates with nature when plowing and digging. - Ptolomeus