“Gratitude looks to the past and love to the present; fear, avarice, lust, and ambition look ahead.”

"Lord Brooke and Sir Philip Sidney".
Imaginary Conversations (1824-1829)

Hyperion http://www.gutenberg.org/etext/5436, Bk. IV, Ch. 8 (1839).

(18th August 1822) These from a prose sketch - Isadore
The London Literary Gazette, 1821-1822

Source: Sylvie and Bruno (1889), Chapter 25 : Looking Eastward

Source: Jaws

The Golden Man (1954)
Context: "He can look ahead. See what's coming. He can — prethink. Let's call it that. He can see into the future. Probably he doesn't perceive it as the future."
"No," Anita said thoughtfully. "It would seem like the present. He has a broader present. But his present lies ahead, not back. Our present is related to the past. Only the past is certain, to us. To him, the future is certain. And he probably doesn't remember the past, any more than any animal remembers what happened."
"As he develops," Baines said, "as his race evolves, it'll probably expand its ability to prethink. Instead of ten minutes, thirty minutes. Then an hour. A day. A year. Eventually they'll be able to keep ahead a whole lifetime. Each one of them will live in a solid, unchanging world. There'll be no variables, no uncertainty. No motion! They won't have anything to fear. Their world will be perfectly static, a solid block of matter."
"And when death comes," Anita said, "they'll accept it. There won't be any struggle; to them, it'll already have happened."

Variant: Change is the law of life. And those who look only to the past or present are certain to miss the future.

Source: The Inheritance of Loss