“Do not wait; the time will never be "just right." Start where you stand, and work with whatever tools you may have at your command, and better tools will be found as you go along.”

1990s

Start where you stand, and work with whatever tools you may have at your command, and better tools will be found as you go along.
Think and Grow Rich (1938)

1990s, Rolling Stone interview (1994)

Source: The Final Empire

The Golden Man (1954)
Context: "We were always afraid a mutant with superior intellectual powers would come along," Baines said reflectively. "A deeve who would be to us what we are to the great apes. Something with a bulging cranium, telepathic ability, a perfect semantic system, ultimate powers of symbolization and calculation. A development along our own path. A better human being."
"He acts by reflex," Anita said wonderingly. She had the analysis and was sitting at one of the desks studying it intently. "Reflex — like a lion. A golden lion." She pushed the tape aside, a strange expression on her face. "The lion god."
"Beast," Wisdom corrected tartly. "Blond beast, you mean."
"He runs fast," Baines said, "and that's all. No tools. He doesn't build anything or utilize anything outside himself. He just stands and waits for the right opportunity and then he runs like hell."
"This is worse than anything we've anticipated," Wisdom said. His beefy face was lead-gray. He sagged like an old man, his blunt hands trembling and uncertain. "To be replaced by an animal! Something that runs and hides. Something without a language!" He spat savagely. "That's why they weren't able to communicate with it. We wondered what kind of semantic system it had. It hasn't got any! No more ability to talk and think than a — dog."

Variant: Can I be blunt on this subject? If you don't have time to read, you don't have the time (or the tools) to write. Simple as that.
Source: On Writing: A Memoir of the Craft

Source: Beloved (1987), Ch. 3