This narrow isthmus 'twixt two boundless seas. [ Moore ]

This narrow isthmus between two boundless seas,
The past, the future - two eternities. [ Moore ]

That unfathomed, boundless sea, the silent grave! [ Longfellow ]

Knowledge is boundless, - human capacity, limited. [ Chamfort ]

Thine eyes are like the deep, blue, boundless heaven
Contracted in two circles underneath
Their long, fine lashes; dark, far, measureless,
Orb within orb, and line through line inwoven. [ Shelley ]

When once ambition has passed its natural limits, its progress is boundless. [ Seneca ]

The scorn of genius is the most arrogant and the most boundless of all scorn. [ Ouida ]

Good Heaven, whose darling attribute we find is boundless grace, and mercy to mankind, abhors the cruel. [ Dryden ]

Life, as we call it, is nothing but the edge of the boundless ocean of existence where it comes upon soundings. [ Holmes ]

Happy child! the cradle is still to thee a vast space; but when thou art a man the boundless world will be too small for thee. [ Schiller ]

Happy child! the cradle is still to thee an infinite space; once grown into a man, and the boundless world will be too small to thee. [ Friedrich Schiller ]

O'er the glad waters of the dark blue sea. Our thoughts as boundless, and our souls as free, Far as the breeze can bear, the billows foam. Survey our empire, and behold our home! [ Byron ]

All life is surrounded by a great circumference of death; but to the believer in Jesus, beyond this surrounding death is a boundless sphere of life. He has only to die once to be done with death forever. [ James Hamilton ]

Young people are dazzled by the brilliancy of antithesis, and employ it. Matter-of-fact men, and those who like precision, naturally fall into comparisons and metaphor. Sprightly natures, full of fire, and whom a boundless imagination carries beyond all rules, and even what is reasonable, cannot rest satisfied even with hyperbole. As for the sublime, it is only great geniuses and those of the very highest order that are able to rise to its height. [ Bruyere ]