The study of Nature makes a man at last as remorseless as Nature. - H.G. Wells
Who feels no ills, should, therefore, fear them; and when fortune smiles, be doubly cautious, lest destruction come remorseless on him, and he fall unpitied. - Sophocles
When beholding the tranquil beauty and brilliancy of the ocean's skin, one forgets the tiger heart that pants beneath it; and would not willingly remember that this velvet paw but conceals a remorseless fang. - Herman Melville
Facts have a cruel way of substituting themselves for fancies. There is nothing more remorseless, just as there is nothing more helpful, than truth. - William C. Redfield