Rick Yancey said this quote

Beyond their immaculate design, the reason sharks rule the ocean is their complete indifference to everything except feeding, procreation, and defending their territory. The shark does not love. It feels no empathy. It trusts nothing. It lives in perfect harmony with its environment because it has no aspirations or desires. And no pity. A shark feels no sorrow, no remorse, hopes for nothing, dreams of nothing, has no illusions about itself or anything beyond itself.